text:
Assault gun

An assault gun (from Sturmgeschütz, lit. 'storm gun', meaning "assault gun") is a type of self-propelled artillery which uses an infantry support gun mounted on a motorized chassis, normally an armored fighting vehicle, which are designed to provide direct fire support for infantry attacks, especially against other infantry or fortified positions. Assault guns were pioneered by the Soviet Union and Nazi Germany during the 1930s, initially being self-propelled guns with direct fire in mind (such as the Soviet SU-5-1), with Germany introducing the first purpose-built (and purpose-named) assault gun, the Sturmgeschütz III, in 1940.

Historically, the concept of assault guns was very similar to that of the infantry tank, as both were combat vehicles intended to accompany infantry formations into battle. However, during World War II assault guns were more mobile than tanks and could be utilized as both direct and indirect fire artillery. Although they could approximate the firepower of a tank, assault guns mostly fired high explosive shells at relatively low velocities, which were well suited for their role of knocking out hard points such as fortified positions and buildings. They were not intended to be deployed as tank substitutes or dedicated tank destroyers. Nevertheless, as the conflict progressed, the increasing proliferation of tanks on the battlefield forced many assault gun units to engage armor in defense of the infantry, and led to armies becoming more dependent on multipurpose designs which combined the traditionally separate roles of an assault gun and a tank destroyer.

German and Soviet assault guns introduced during World War II usually carried their main armament in a fully enclosed casemate rather than a gun turret. Although this limited the field of fire and traverse of the armament, it also had the advantage of a reduced silhouette and simplified the manufacturing process. The United States never developed a purpose-built assault gun during the war, although it did modify preexisting armored fighting vehicles for that role, including the M4 Sherman (as the M4(105)), the M5 Stuart (as the M8 Scott), and the M3 half-track (as the T19 Howitzer Motor Carriage). The classic assault gun concept was largely abandoned during the postwar era in favor of tanks or multipurpose tank destroyers attached to infantry formations, which were also capable of providing direct fire support as needed. In the United States and most Western countries, the assault gun ceased to be recognized as a unique niche, with individual examples being classified either as a self-propelled howitzer or a tank, one exception being Sweden, which continued to develop casemate assault guns post-war, such as the Infanterikanonvagn 72, all the way into the 1960s before settling on a turreted design in 1968, becoming the Infanterikanonvagn 91. The Soviet Union continued funding development of new assault guns as late as 1967, although few of its postwar designs were adopted in large numbers. In Soviet and Eastern European armies, the traditional assault gun was primarily superseded by tank destroyers, such as the SU-100, which is capable of supporting either infantry or armor. Since the 1980s, the multi-purpose assault gun concept has seen a resurgence, mainly in the form of turreted wheeled designs, such as the South African Rooikat and Italian B1 Centauro. Today, modern assault guns include the Japanese Type 16 Maneuver Combat Vehicle and the American M1128 Stryker and M10 Booker.

World War II
Assault guns were primarily developed during World War II by the forces of Nazi Germany and the Soviet Union. Early in the war, the Germans began to create makeshift assault guns by mounting their infantry support weapons on the bed of a truck or on obsolete tanks with the turret removed. Later in the war, both the Germans and the Soviets introduced fully armoured purpose-built assault guns into their arsenals.

Early on, the Soviets built the KV-2, a variant of the KV-1 heavy tank with a short-barreled 152 mm howitzer mounted in an oversized turret. This was not a success in battle, and was replaced with a very successful series of turretless assault guns: the SU-76, SU-122, and the heavy SU-152, which were followed by the ISU-122 and ISU-152 on the new IS heavy tank chassis.

The primary German assault gun was the Sturmgeschütz III (StuG III). At about the same time (March 1942) as the howitzer-like KwK 37 gun was dropped from the Panzer IV's use, its Sturmkanone equivalent in the StuG III up to that time, was likewise replaced with a longer-barreled, high-velocity dual-purpose 75 mm gun that had also been derived from the successful PaK 40 anti-tank towed artillery piece. The Germans also built a number of other fully armoured turretless assault guns, including the StuG IV, StuIG 33B, Brummbär and Sturmtiger. This last one was a very heavy vehicle, and was built only in small quantities.

Battalions of assault guns, usually StuG IIIs, commonly replaced the intended panzer battalion in the German panzergrenadier divisions due to the chronic shortage of tanks, and were sometimes used as makeshifts even in the panzer divisions. Independent battalions were also deployed as "stiffeners" for infantry divisions, and the StuG III's anti-tank capabilities bolstered dwindling tank numbers on the Eastern and Western fronts.

US and UK forces also deployed vehicles designed for a close support role, but these were conventional tanks whose only significant modification was the replacement of the main gun with a howitzer. Two versions of the American Sherman tank were armed with the M4 105 mm howitzer, the M4(105) and the M4A3(105); these were designated assault guns in US usage of the term. The M8 Scott, based on the chassis of the M5 Stuart light tank, was also an assault cannon and carried a 75 mm short howitzer. The Churchill, Centaur and Cromwell tanks were all produced in versions armed with 95 mm howitzers: the Churchill Mark V and Mark VIII, the Centaur Mark IV and the Cromwell Mark VI. Earlier British tanks, such as the Crusader cruiser tank and the Matilda II Infantry tank were produced in versions armed with the 3-inch howitzer; the first versions of the Churchill tank also had this gun in a hull mounting. American tank destroyer units were often used in the assault gun role for infantry support.

The AVRE version of the Churchill tank was armed with a spigot mortar that fired a 40 lb HE-filled projectile (nicknamed the Flying Dustbin) 150 yd. Its task was to attack fortified positions such as bunkers at close range (see Hobart's Funnies).

Since World War II
In the post-World War II era, most vehicles fitting into an "assault gun" category were developed as a light-weight, air-deployable, direct fire combat vehicles for use with airborne troops. Those weapons were either based on light utility vehicles or small tracked vehicles and the airborne troops thus always fought at a distinct disadvantage in terms of heavy weapons. The Soviet Union and the United States were the most attracted to the idea of providing this capability to traditionally light airborne forces. Their answers to the problem were similar, with the United States developing the M56 Scorpion and the Soviet Union developing the ASU-57, both essentially airdroppable light anti-tank guns.

The Soviets went on to develop an improved airdroppable assault gun, the ASU-85, which served through the 1980s, while their SU-100 remained in service with Communist countries, including Vietnam and Cuba, years after World War II. The US M56 and another armoured vehicle, the M50 Ontos, were to be the last of the more traditional assault guns in US service. Improvised arrangements such as M113 personnel carriers with recoilless rifles were quickly replaced by missile carrier vehicles in the anti-tank role.

The only vehicle with the qualities of an assault gun to be fielded after the removal of the M50 and M56 from service within the US military was the M551 Sheridan. The Sheridan's gun was a low-velocity weapon suitable in the assault role, but with the addition of the Shillelagh missile could double in the anti-tank role as well. The Sheridan, however, was not developed as an assault gun but as a light reconnaissance vehicle.

Currently, there appears to be a move toward wheeled vehicles fitting a "tank destroyer" or "assault gun" role, such as the M1128 Mobile Gun System of the United States Army, the B1 Centauro wheeled tank destroyer of the Italian and Spanish Armies, the Chinese anti-tank gun PTL-02 and ZBL08 assault gun, and the French AMX-10 RC heavy armoured car. While these vehicles might be useful in a direct fire role, none were developed with this specifically in mind, reminiscent of the use of tank destroyers by the US military in the assault gun role during World War II.

Germany

 * 1940 – Sturmgeschütz III
 * 1940 – Sturmpanzer I Bison
 * 1941 – Sturmpanzer II
 * 1942 – Sturmpanzer III
 * 1942 – Sturm-Infanteriegeschütz 33B
 * 1943 – Sturmhaubitze 42
 * 1943 – Sturmgeschütz IV
 * 1943 – Sturmpanzer IV Stupa
 * 1943 – Sturmpanzer 38(t) Grille Ausf. H
 * 1944 – Sturmpanzer 38(t) Grille Ausf. K
 * 1944 – Sturmpanzer VI Sturmtiger

Hungary

 * 1943 – 43M Zrínyi II
 * 1944 – 44M Zrínyi I

Italy

 * 1942 – Semovente da 47/32
 * 1942 – Semovente da 75/18 M41
 * 1943 – Semovente da 75/32 M41
 * 1943 – Semovente da 75/34 M42
 * 1943 – Semovente da 105/25 M43
 * 1944 – Semovente da 75/34 M43
 * 1944 – Semovente da 75/46 M43
 * 1991 – B1 Centauro
 * 2018 – B2 Centauro

Japan

 * 1942 – Type 1 Ho-Ni II
 * 1944 – Type 4 Ho-Ro
 * 1944 – Type 4 Ho-To
 * 2016 – Type 16 Maneuver Combat Vehicle

South Africa

 * 1962 – Eland 90
 * 1987 – Rooikat 76
 * 1994 – Rooikat 105

Soviet Union

 * 1931 – SU-1
 * 1934 – SU-5
 * 1935 – SU-6
 * 1935 – AT-1
 * 1941 – SU-76P
 * 1942 – SU-76
 * 1942 – SU-122
 * 1943 – SU-85
 * 1943 – SU-152
 * 1943 – ISU-152
 * 1944 – ISU-122
 * 1944 – SU-100
 * 1945 – Object 704
 * 1951 – ASU-57
 * 1955 – SU-122-54
 * 1956 – Object 268
 * 1958 – ASU-85

Sweden

 * 1943 – Stormpjäs fm/43
 * 1944 – Stormpjäs fm/43-44
 * 1944 – Stormartillerivagn m/43
 * 1953 – Infanterikanonvagn 72
 * 1957 – Infanterikanonvagn 73
 * 1957 – Infanterikanonvagn 102
 * 1957 – Infanterikanonvagn 103
 * 1976 – Infanterikanonvagn 91
 * 1994 – Stridsfordon 90105
 * 1998 – Stridsfordon 90120

USA

 * 1942 – M8 Scott
 * 1944 – M4 Sherman 105
 * 1953 – M56 Scorpion
 * 1969 – M551 Sheridan
 * 1992 – M8 AGS
 * 2002 – M1128 Stryker
 * 2021 – XM1302 MPF
 * 2022 – M10 Booker

title: Assault gun


text:
Tank destroyer

A tank destroyer, tank hunter or tank killer is a type of armoured fighting vehicle, predominantly intended for anti-tank duties. They are typically armed with a direct fire artillery gun, also known as a self-propelled anti-tank gun, or missile launcher, also called an anti-tank missile carrier. The vehicles are designed specifically to engage and destroy enemy tanks, often with limited operational capacities.

While tanks are designed for front-line combat, combining operational mobility and tactical offensive and defensive capabilities and performing all primary tasks of the armoured troops, the tank destroyer is specifically designed to take on enemy tanks and other armoured fighting vehicles. Many are based on a tracked tank chassis, while others are wheeled.

Since World War II, gun-armed powerful tank destroyers have fallen out of favor as armies have favored multirole main battle tanks. However, lightly armoured anti-tank guided missile (ATGM) carriers are commonly used for supplementary long-range anti-tank work. The resurgence of expeditionary warfare in the first two decades of the 21st century has seen the emergence of gun-armed wheeled vehicles, sometimes called "protected gun systems", which may bear a superficial resemblance to tank destroyers, but are employed as direct fire support units typically providing support in low-intensity operations, as was done in wars in Iraq and Afghanistan.

World War II
Dedicated anti-tank vehicles made their first major appearance in the Second World War as combatants developed effective armoured vehicles and tactics. Some were little more than stopgap solutions, mounting an anti-tank gun on a tracked vehicle to give mobility, while others were more sophisticated designs. An example of the development of tank destroyer technology throughout the war are the Marder III and Jagdpanzer 38 vehicle, that were very different in spite of being based on the same chassis: Marder was straightforwardly an anti-tank gun on tracks whereas the Jagdpanzer 38 traded some firepower (its 7.5 cm Pak 39, designed to operate within the confines of a fully armoured fighting compartment, fires the same projectiles from a reduced propellant charge compared to Marder's 7.5 cm Pak 40) for better armour protection and ease of concealment on the battlefield.

Except for most American designs, all tank destroyers were turretless vehicles with fixed or casemate superstructures. When a tank destroyer was used against enemy tanks from a defensive position such as by ambush, the lack of a rotating turret was not particularly critical, while the lower silhouette was highly desirable. The turretless design allowed accommodation of a more powerful gun, typically a dedicated anti-tank gun (in lieu of a regular tank's general-purpose main gun that fired both anti-tank and high explosive ammunition) that had a longer barrel than could be mounted in a turreted tank on the same chassis. The lack of a turret increased the vehicle's internal volume, allowing for increased ammunition stowage and crew comfort. Eliminating the turret let the vehicle carry thicker armour, and also let this armour be concentrated in the hull. Sometimes there was no armoured roof (only a weather cover) to keep the overall weight down to the limit that the chassis could bear. The absence of a turret meant that tank destroyers could be manufactured significantly cheaper, faster, and more easily than the tanks on which they were based, and they found particular favor when production resources were lacking.

Germany

The first German tank destroyers were the Panzerjäger ("Tank Hunters"), which mounted an existing anti-tank gun on a convenient chassis for mobility, usually with just a three-sided gun shield for crew protection. For instance, 202 obsolete Panzer I light tanks were modified by removing the turret and were rebuilt as the Panzerjäger I self-propelled 4.7 cm PaK(t). Similarly, Panzer II tanks were used on the eastern front. Captured Soviet 76.2 mm anti-tank guns were mounted on modified Panzer II chassis, producing the Marder II self-propelled anti-tank gun. The most common mounting was a German 75 mm anti-tank gun on the Czech Panzer 38(t) chassis as the Marder III. The Panzer 38(t) chassis was also used to make the Jagdpanzer 38 casemate style tank destroyer. The Panzerjäger series continued up to the 88 mm equipped Nashorn.

German tank destroyers based on the Panzer III medium tank and later German tanks had more armour than their tank counterparts. One of the more successful German tank destroyers was designed as a self-propelled artillery gun, the Sturmgeschütz III. Based on the Panzer III tank chassis, the Sturmgeschütz III was originally fitted with a short barreled low-velocity howitzer-like gun, and was assigned to the artillery arm for infantry fire support as an assault gun. Later, after encountering Soviet tanks, it was refitted with a comparatively short-barreled high-velocity anti-tank gun, usually with a muzzle brake, enabling it to function as a tank destroyer. The Sturmgeschütz III from its 1938 origin used a new casemate-style superstructure with an integrated design, similar to the later Jagdpanzer vehicle designs' superstructure, to completely enclose the crew. It was employed in infantry support and offensive armoured operations as well as in the defensive anti-tank role. The StuG III assault gun was Germany's most-produced fully tracked armoured fighting vehicle during World War II, and second-most produced German armoured combat vehicle of any type after the Sd.Kfz. 251 half-track.

Although the early German Panzerjäger carried more effective weapons than the tanks on which they were based, they were generally lacking in protection for the crew, having thinly armoured open-topped superstructures. The "open-topped" design format of the Panzerjäger vehicles was succeeded by the Jagdpanzer ("hunting tanks"), which mounted the gun in true casemate-style superstructures, completely enclosing the crew compartment in armor that was usually integral to the hull. The first of these Jagdpanzers was the 70-ton Ferdinand (later renamed Elefant), based on the chassis, hulls, and drive systems of ninety-one Porsche VK4501 (P) heavy tanks, mounting a long-barreled 88 mm cannon in an added casemate, more like the earlier Panzerjägers had with their added-on armour shielding for the gun crew, but in the Ferdinand completely enclosing the gun and firing crew in the added casemate, as the later purpose-built Jagdpanzers would. However, the Ferdinand was mechanically unreliable and difficult to maneuver, and once all ninety-one unturreted "Porsche Tiger" hulls/drive systems were converted, no more were built. The German Army had more success with the Jagdpanther. Introduced in mid-1944, the Jagdpanther, of which some 415 examples were produced, was considered the best of the casemate-design Jagdpanzer designs. It featured the same powerful PaK 43 88 mm cannon used on the unwieldy Elefant, now fitted to the chassis of the medium Panther tank, providing greatly improved armour-penetrating capability in a medium-weight vehicle.

Facing an increasingly defensive war, the German Army turned to larger and more powerfully armed Jagdpanzer designs, and in July 1944 the first Jagdtiger rolled off the production line; it was the heaviest German armoured fighting vehicle to go into active service. The Jagdtiger was based on the Tiger II heavy tank featured a very large 128 mm PaK 44 cannon and heavy armour protection. Only 88 Jagdtiger vehicles were produced, barely matching the total number of the earlier Ferdinand / Elefant vehicles. They were first deployed to combat units in September 1944.

The decision of German armoured vehicle designers to use a casemate-style superstructure for all tank destroyers had the advantage of a reduced silhouette, allowing the crew to more frequently fire from defilade ambush positions. Such designs were also easier and faster to manufacture and offered good crew protection from artillery fire and shell splinters. However, the lack of a rotating turret limited the gun's traverse to a few degrees. This meant that the driver normally had to turn the entire tank onto its target, a much slower process than simply rotating a powered turret. If the vehicle became immobilized due to engine failure or track damage, it could not rotate its gun to counter opposing tanks, making it highly vulnerable to counterfire. This vulnerability was later exploited by opposing tank forces. Even the largest and most powerful of German tank destroyers were found abandoned on the field after a battle, having been immobilized by one or more hits by high explosive (HE) or armour-piercing (AP) shells to the track or front drive sprocket.

Italy

The most famous Italian tank destroyer of the Second World War was a self-propelled gun. The Semovente da 75/18, based on the M13/40 frame, was developed to support front-line infantry, and therefore had fixed armament: a 75 mm gun in casemate. However, thanks to its low height (185 cm) and the caliber of its gun the 75/18 also had good results in anti-tank combat, fighting against British and American (but not Soviet) units. After the Armistice of 1943, the 75/18 remained in use by German forces.

Built on the same frame, the Semovente da 105/25 was equipped with a 105 mm gun and known as "bassotto" (Italian for dachshund) due to its lower height. As manufacturing began in 1943, the 105/25 was used by German forces. A further development was the Semovente da 75/46, which had a longer gun than the 75/18 and inclined armour 100 mm thick, making it similar to Sturmgeschütz III. Only 11 of these were manufactured. Before the Semovente da 75/18, the L40, built on an L6/40 light tank chassis, saw action in Africa and in Russia, but with disappointing results.

Japan

The Type 1 Ho-Ni I was the first self-propelled gun design of the Imperial Japanese Army. They were meant to be self-propelled artillery and tank destroyers for armoured divisions. The plan was for the Type 1 Ho-Ni I gun tank to form part of a fire support company in each of the tank regiments. The Type 1 Ho-Ni I was developed by using the existing Type 97 Chi-Ha medium tank chassis and engine, and replacing the gun turret with a Type 90 75 mm field gun mounted in an open casemate with frontal and side armour only. They entered service in 1942 and were first deployed in combat at the Battle of Luzon in the Philippines in 1945. Some were used in static entrenched positions.

A variant, known as the Type 1 Ho-Ni II mounted a Type 91 105 mm howitzer and had a slightly changed superstructure as far as the side armor with re-positioned observation visors. Production began in 1943, with only 54 completed.

The other variant produced was the Type 3 Ho-Ni III, which mounted a Type 3 75 mm tank gun in a completely enclosed armored casemate to address the issue of crew protection in close combat. The welded superstructure had sloped armour and the gun mount had additional stamped armour plate. The total number produced of all three types in the Ho-Ni series were 111 units. Most of the Ho-Ni units were retained within the Japanese home islands to form part of the defenses against the projected American invasion, and did not see combat before the surrender of Japan.

The Type 2 Ho-I Gun tank used the Type 1 Chi-He medium tank chassis. It was designed as a self-propelled howitzer, mounting a short barreled Type 99 75 mm gun to provide close-in fire support. For deployment, the gun tank was intended to be used in a fire support company for each of the tank regiments. No Type 2 Ho-I gun tanks are known to have engaged in combat prior to Japan's surrender. The prototype was built in 1942 and 31 units were produced in 1944.

The Type 4 Ho-Ro self-propelled artillery used a modified Type 97 chassis. On to this platform, a Type 38 150 mm howitzer was mounted. The main gun could fire Type 88 APHE rounds and HEAT rounds. Given its breech loader, the maximum rate of fire was only 5 rounds per minute. The gun's elevation was restricted to 30 degrees by the construction of the chassis. Other design issues included the fact that although the gun crew was protected by a gun shield with armour thickness of 25 mm at the front, the shield only extended a very short distance on the sides; leaving the rest of the sides and back exposed. They were rushed into service, deployed and saw combat during the Philippines Campaign in the last year of World War II. Remaining units were deployed to Okinawa in ones and twos for island defense during the Battle of Okinawa, but were severely outnumbered by American artillery.

Soviet Union

As with the Germans of 1943, most of the Soviet designs mounted anti-tank guns, with limited traverse in casemate-style turretless hulls, in a general design format looking much like the Germans' own Jagdpanzer vehicles. The results were smaller, lighter, and simpler to build weapons that could carry larger guns than any contemporary tank, including the King Tiger. The Soviets produced high numbers of the 85 mm SU-85 and 100 mm SU-100 self-propelled guns based on the same chassis as the T-34 medium tank; the heavier-duty powertrain and hull of the IS-2 heavy tank were instead used to produce the heavier-hitting 122 mm-armed ISU-122 and 152 mm-armed ISU-152, both of which had impressive anti-tank capabilities earning each of them the Russian nickname Zveroboy ("beast killer") for their ability to destroy German Tigers, Panthers and Elefants. The predecessor of the ISU 152 was the SU-152, built on the KV-1s chassis and shared many similarities (including its gun) with the ISU-152. The ISU-152 built as a heavy assault gun, relied on the weight of the shell fired from its M-1937/43 howitzer to defeat tanks. In 1943, the Soviets also shifted all production of light tanks like the T-70 to much simpler and better-armed SU-76 self-propelled guns, which used the same drive train. The SU-76 was originally designed as an anti-tank vehicle, but was soon relegated to the infantry-support role.

United States
U.S. Army and counterpart British designs were very different in conception. U.S. doctrine was based, in light of the fall of France, on the perceived need to defeat German blitzkrieg tactics, and U.S. units expected to face large numbers of German tanks, attacking on relatively narrow fronts. These were expected to break through a thin screen of anti-tank guns, hence the decision that the main anti-tank units—the Tank Destroyer (TD) battalions—should be concentrated and very mobile. In practice, such German attacks rarely happened. Throughout the war, only one battalion ever fought in an engagement like that originally envisaged (the 601st, at the Battle of El Guettar). The Tank Destroyer Command eventually numbered over 100,000 men and 80 battalions each equipped with 36 self-propelled tank destroyers or towed guns.

Only a few shots were expected to be fired from any firing position. Strong reconnaissance elements were provided so that TDs could use pre-arranged firing positions to best advantage. Flanking fire by TDs was emphasized, both to penetrate thinner enemy side armour, and to reduce the likelihood of accurate enemy return fire.

All American tank destroyers were officially known by exactly the same collective term used for American self-propelled artillery ordnance, "gun motor carriage". The designs were intended to be very mobile and heavily armed. Most of the tank-hull based designs used special open-topped turrets of a differing design from the original tank it was based on, which was meant to both save weight and to accommodate a larger gun. The earliest expedient design was mounting an 75 mm M1897 field gun in a limited-traverse mount on a M3 Half-track which was designated 75 mm Gun Motor Carriage M3. Another, considerably less successful, early design was the M6 Gun Motor Carriage which mounted the US 37-mm anti-tank gun facing to the rear on the bed of a Dodge 3/4-ton light truck.

The M3 was first used against the Japanese in the Philippines and then in the Tunisian campaign of the war in North Africa. Some were supplied to British units who used them within armoured car reconnaissance regiments for fire support. The M6 GMC was unarmoured and the 37mm gun was infective against most enemy tanks by the time it entered service.

By far the most common US design, and the first that was fully tracked and turreted (which became the American hallmark of World War II "tank destroyer" design) was the 3in Gun Motor Carriage M10, later supplemented by the 90 mm Gun Motor Carriage M36—both based on the M4 Sherman hull and powertrain—and the 76 mm Gun Motor Carriage M18 (Hellcat), based on a unique hull and powertrain design, with a slight visual resemblance to what was used for the later M24 Chaffee light tank. The M18 came closest to the US ideal; the vehicle was very fast, small, and mounted a 76 mm gun in a roofless open turret. The M36 Jackson GMC possessed the only American-origin operational gun that could rival the German 8.8 cm Pak 43 anti-tank gun and its tank mounted variant, the 90 mm M3 gun, and the M36 remained in service well after World War II. The only dedicated American casemate hull design fighting vehicle of any type built during the war, that resembled the German and Soviet tank destroyers in hull and general gun mounting design, was the experimental T28 Super Heavy Tank, which mounted a 105 mm T5E1 long-barrel cannon. This gun had a maximum firing range of 12 miles (20 km), and the vehicle was originally designed as a very heavily armoured self-propelled assault gun to breach Germany's Siegfried Line defenses.

Of these tank destroyers, only the 90 mm gun of the M36 proved effective against the frontal armour of Germans' larger armored vehicles at long range. The open top and light armour made these tank destroyers vulnerable to anything greater than small-arms fire. As the number of German tanks encountered by American forces steadily decreased throughout the war, most battalions were split up and assigned to infantry units as supporting arms, fighting as assault guns or being used essentially as tanks. In this sense they were an alternative to the Independent tank battalions that were attached to various Infantry Divisions.

The expectation that German tanks would be engaged in mass formation was a failed assumption. In reality, German attacks effectively used combined arms on the ground, fighting cohesively. American tank destroyer battalions comprised three tank destroyer companies supported by nine security sections. The single-purpose tactics of the tank destroyer battalion failed to account for non-tank threats.

In the 1950s the goal of providing airborne forces with a parachute-capable self-propelled anti-tank weapon led to the deployment of the M56 Scorpion and M50 Ontos. The concept later led to the M551 Sheridan light tank of the mid-1960s.

United Kingdom
British tanks in the early years of the war, both infantry tanks and cruiser tanks, were (with the exception of the pre-war Matilda I design) equipped with a gun capable of use against contemporary enemy tanks—the 40 mm Ordnance QF 2 pounder. This was replaced with the 57 mm Ordnance QF 6 pounder when that became available. There was extra impetus given to the development of anti-tank weaponry, which culminated in the 76mm Ordnance QF 17 pounder, widely considered one of the best anti-tank guns of the war.

Towed anti-tank guns were the domain of the Royal Artillery and vehicles adapted to mount artillery, including anti-tank self-propelled guns such as the Deacon (6pdr on an armoured wheeled truck chassis) and Archer (17pdr on tracked chassis) and US-supplied vehicles, were their preserve rather than the Royal Armoured Corps.

The self-propelled guns that were built in the "tank destroyer" mould came about through the desire to field the QF 17 pounder anti-tank gun and simultaneous lack of suitable standard tanks to carry it. As a result, they were of a somewhat extemporized nature. Mounting the gun on the Valentine tank chassis in a fixed superstructure gave the Archer, looking somewhat like the light-chassis German Marder III in appearance. The 17 pounder was also used to re-equip the US-supplied M10 Tank Destroyer, replacing the American 3-inch gun to produce the 17pdr SP Achilles.

In 1942 the General Staff agreed on investigating self-propelled mountings of the 6-pounder, 17-pounder, 3-inch 20cwt guns and the 25-pounder field gun/howitzer on the Matilda II, Valentine, Crusader and Cavalier (Cruiser Mark VII) tank chassis. In October 1942 it was decided to progress using the Valentine chassis with a 17-pdr (which would become Archer) and 25-pdr (which entered service as Bishop).

While there was a general move to a general purpose gun that was usable against both tanks and in supporting infantry, there was a need to put the 17 pdr into a tank for use against the enemy's heavy tanks. The Cruiser Mk VIII Challenger was a project to bring a 17 pdr tank into use to support the Cromwell cruiser tank. Delays led to it being outnumbered in use by the Sherman Firefly—but a derivative of Challenger was the more or less open-topped variant Avenger, which was delayed until post war before entering service. A cut-down 17 pdr, the 77mmHV was used to equip the Comet tank in the last year of the war.

The closest the British came to developing an armoured tank destroyer in the vein of the German Jagdpanzers or Soviet ISU series was the Churchill 3-inch Gun Carrier—a Churchill tank chassis with a boxy superstructure in place of the turret and mounting a 3-inch anti-aircraft gun. Although a number were ordered and fifty delivered in 1942, they were not put into service as the immediate threat passed. The design was rejected in favor of developing a 17 pounder armed Cromwell tank variant, ultimately leading to the Comet tank. The Tortoise "heavy assault tank", intended for use in breaking through fixed defensive lines, was well armoured and had a very powerful 32-pounder (94 mm) gun, but did not reach service use.

By 1944, a number of the Shermans in British use were being converted to Sherman Fireflies by adding the QF 17 pounder gun. Initially this gave each troop (platoon) of Shermans one powerfully armed tank. By war's end—through the production of more Fireflies and the replacement of Shermans by British tanks—about 50% of Shermans in British service were Fireflies. The Sherman Firefly, however, is not considered a tank destroyer since it could still perform the other duties of the regular M4 Sherman, albeit the Firefly was less capable due to the late development of a HE round for the QF 17 pounder.

Romania

Until 1942, the Romanian tank force was equipped exclusively with obsolete R-1, R-2 and R35 tanks. Having faced big problems against Soviet T-34 and KV-1 tanks on the Eastern Front, the Romanian Army leadership sought for ways to improve its anti-tank capabilities. The initial plan was the creation of a tank comparable in characteristics to the T-34; instead, Romania went for a number of tank destroyers, since they were more adequate for its industry.

The Mareșal is probably the best known Romanian AFV from the war; historians Steven Zaloga and Mark Axworthy state that it inspired the design of the later German Hetzer. Standing at only around 1.5 m tall, which would have made it very difficult to hit for its enemies, the Mareșal was a lightly armored, but highly mobile vehicle. It was armed with the Romanian 75 mm Reșița M1943 anti-tank gun, which proved to be among the best of its class during World War II, according to Mark Axworthy. During tests, the Mareșal proved to be superior in many aspects to the StuG III G, against which it competed. Those facts suggest that the Mareșal would have been an effective tank destroyer, had it been deployed into combat. There were, however, also critics of the vehicle, especially among high-ranking Romanian officials. It never saw action because the invading Soviet army had stopped its production.

Other Romanian tank destroyers include the TACAM R-2 and TACAM T-60, which were converted from R-2 and T-60 light tanks respectively. Both of them saw action. One TACAM R-2 survives today and is displayed at the National Military Museum in Bucharest. Another conversion was the VDC R-35, Romania's only turreted tank destroyer. Two other proposed tank destroyers existed: the TACAM R-1 and TACAM T-38.

Poland
Variants of the Polish TKS and TK-3 tankettes up-armed with 20 mm gun (23–26 vehicles) were operationally deployed in the invasion of Poland. They were used as an anti-tank component of the reconnaissance units. There were also 37 mm armed TKS-D (2 experimental vehicles) and 47 mm armed TKD (4 experimental vehicles). It is not certain whether they were used operationally at all.

France
Due to the quick defeat of France, few French vehicles were built. The Laffly W15 TCC (Chasseur de chars) was an attempt to quickly build a light tank destroyer by mounting a 47 mm SA37 anti-tank gun onto a lightly armoured Laffly W15T artillery tractor. Other French tank destroyers were being developed, including the SOMUA SAu-40, ARL V39 and various ad hoc conversions of the Lorraine 37L.

Missile-based tank destroyers

In the face of the Warsaw Pact, a general need for extra firepower was identified. In the late 1960s, West Germany developed the Kanonenjagdpanzer, essentially a modernized World War II Jagdpanzer mounting a 90 mm gun. As Soviet designs became more heavily armoured, the 90 mm gun became ineffective and the Kanonenjagdpanzers were retrofitted for different roles or retired. Some provisions were made for the fitting of a 105 mm cannon, and many of the vehicles were modified to fire HOT or TOW missiles in place of a main gun. These upgraded variants remained in service into the 1990s.

With the development of flexible anti-tank missiles, which were capable of installation on almost any vehicle in the 1960s, the concept of the tank destroyer has morphed into light vehicles with missiles. With the weight of main battle tanks growing to the forty to seventy-tonne range, airborne forces were unable to deploy reasonable anti-tank forces. The result was a number of attempts to make a light vehicle, including the conventional ASU-85, M56 Scorpion, the recoilless rifle-armed Ontos, and missile-armed Humber Hornet armoured truck and Sheridan light assault vehicle. The recent entries into that category are the 2S25 Sprut-SD, armed with a current-issue 125 mm tank gun that is also capable of launching missiles like the 9M119 Svir, and Israeli-modified Pandur IIs, which is to enter service with the Philippine Army by 2022 armed with an Elbit Turret and a 105 mm gun.

Many forces' infantry fighting vehicles (IFVs) carry anti-tank missiles in every infantry platoon, and attack helicopters have also added anti-tank capability to the modern battlefield. But there are still dedicated anti-tank vehicles with very heavy long-range missiles, and ones intended for airborne use.

There have also been dedicated anti-tank vehicles built on ordinary armoured personnel carrier or armored car chassis. Examples include the U.S. M901 ITV (Improved TOW Vehicle) and the Norwegian NM142, both on an M113 chassis, several Soviet ATGM launchers based on the BRDM reconnaissance car, the British FV438 Swingfire and FV102 Striker and the German Raketenjagdpanzer series built on the chassis of the HS 30 and Marder IFV. India fielded NAMIS (Nag Missile System) equipped with Nag Missiles.

A US Army combined arms battalion has two infantry companies with TOW missile-armed Bradley IFVs and can bring a large concentration of accurate and lethal fire to bear on an attacking enemy unit that uses AFVs. They can be complemented by mobile units of AH-64 Apache helicopters armed with Hellfire antitank missiles.

Missile carrying vehicles are often referred to as anti-tank missile carriers instead of tank destroyers.

Postwar gun-based tank destroyers
Despite the proliferation of ATGMs, some gun-armed tank destroyers remain in use. China has developed the tracked PTZ89 and the wheeled PTL02 tank destroyers. The PTZ89 is armed with a 120 mm smoothbore cannon while the PTL02, developed by NORINCO for the PLA's new light (rapid reaction) mechanized infantry divisions, carries a 100 mm one (a version armed with a 105 mm rifled gun is available for export). The PTL02 is built on the 6×6 wheeled chassis of the WZ551 APC.

Italy and Spain use the Italian-built B1 Centauro, a wheeled tank destroyer with a 105 mm cannon.

Russia, meanwhile, uses the Russian-built 2S25 Sprut-SD, operating as an amphibious light tank/tank destroyer armed with a 125 mm cannon.

The Sabrah Pandur II is a wheeled tank destroyer variant of the Sabrah light tank developed by the Elbit Systems of Israel for the Philippine Army's future combat systems.

license: Creative Commons - Attribution Share-Alike - https://creativecommons.org/licenses/by-sa/4.0/

title: Tank destroyer


text:
Armored car (military)

A military armored (also spelled armoured) car is a wheeled armored fighting vehicle, historically employed for reconnaissance, internal security, armed escort, and other subordinate battlefield tasks. With the gradual decline of mounted cavalry, armored cars were developed for carrying out duties formerly assigned to light cavalry. Following the invention of the tank, the armored car remained popular due to its faster speed, comparatively simple maintenance and low production cost. It also found favor with several colonial armies as a cheaper weapon for use in underdeveloped regions. During World War II, most armored cars were engineered for reconnaissance and passive observation, while others were devoted to communications tasks. Some equipped with heavier armament could even substitute for tracked combat vehicles in favorable conditions—such as pursuit or flanking maneuvers during the North African campaign.

Since World War II the traditional functions of the armored car have been occasionally combined with that of the armoured personnel carrier, resulting in such multipurpose designs as the BTR-40 or the Cadillac Gage Commando. Postwar advances in recoil control technology have also made it possible for a few armored cars, including the B1 Centauro, the Panhard AML, the AMX-10 RC and EE-9 Cascavel, to carry a large cannon capable of threatening many tanks.

Precursors
During the Middle Ages, war wagons covered with steel plate, and crewed by men armed with primitive hand cannon, flails and muskets, were used by the Hussite rebels in Bohemia. These were deployed in formations where the horses and oxen were at the centre, and the surrounding wagons were chained together as protection from enemy cavalry. With the invention of the steam engine, Victorian inventors designed prototype self-propelled armored vehicles for use in sieges, although none were deployed in combat. H. G. Wells' short story "The Land Ironclads" provides a fictionalized account of their use.

Armed car
The Motor Scout was designed and built by British inventor F.R. Simms in 1898. It was the first armed petrol engine-powered vehicle ever built. The vehicle was a De Dion-Bouton quadricycle with a mounted Maxim machine gun on the front bar. An iron shield in front of the car protected the driver.

Another early armed car was invented by Royal Page Davidson at Northwestern Military and Naval Academy in 1898 with the Davidson-Duryea gun carriage and the later Davidson Automobile Battery armored car.

However, these were not "armored cars" as the term is understood today, as they provided little protection for their crews from enemy fire.

First armoured cars
At the beginning of the 20th century, the first military armored vehicles were manufactured by adding armor and weapons to existing vehicles. The first armored car was the Simms' Motor War Car, designed by F.R. Simms and built by Vickers, Sons & Maxim of Barrow on a special Coventry-built Daimler chassis with a German-built Daimler motor in 1899. and a single prototype was ordered in April 1899 The prototype was finished in 1902, too late to be used during the Boer War.

The vehicle had Vickers armor, 6 mm thick, and was powered by a four-cylinder 3.3 L 16 hp Cannstatt Daimler engine, giving it a maximum speed of around 9 mph. The armament, consisting of two Maxim guns, was carried in two turrets with 360° traverse. It had a crew of four. Simms' Motor War Car was presented at the Crystal Palace, London, in April 1902.

Another early armored car of the period was the French Charron, Girardot et Voigt 1902, presented at the Salon de l'Automobile et du cycle in Brussels, on 8 March 1902. The vehicle was equipped with a Hotchkiss machine gun, and with 7 mm armour for the gunner.

One of the first operational armored cars with four wheel (4x4) drive and partly enclosed rotating turret, was the Austro-Daimler Panzerwagen built by Austro-Daimler in 1904. It was armored with 3-3.5 mm thick curved plates over the body (drive space and engine) and had a 4 mm thick dome-shaped rotating turret that housed one or two machine-guns. It had a four-cylinder 35 hp 4.4 L engine giving it average cross country performance. Both the driver and co-driver had adjustable seats enabling them to raise them to see out of the roof of the drive compartment as needed.

The Spanish Schneider-Brillié was the first armored vehicle to be used in combat, being first used in the Kert Campaign. The vehicle was equipped with two machineguns and built from a bus chassis.

An armored car known as the Death Special was built at the CFI plant in Pueblo and used by the Badlwin-Felts detective agency during the Colorado Coalfield War

World War I
A great variety of armored cars appeared on both sides during World War I and these were used in various ways. Generally, armored cars were used by more or less independent car commanders. However, sometimes they were used in larger units up to squadron size. The cars were primarily armed with light machine guns, but larger units usually employed a few cars with heavier guns. As air power became a factor, armored cars offered a mobile platform for antiaircraft guns.

The first effective use of an armored vehicle in combat was achieved by the Belgian Army in August–September 1914. They had placed Cockerill armour plating and a Hotchkiss machine gun on Minerva touring cars, creating the Minerva Armored Car. Their successes in the early days of the war convinced the Belgian GHQ to create a Corps of Armoured Cars, who would be sent to fight on the Eastern front once the western front immobilized after the Battle of the Yser.

The British Royal Naval Air Service dispatched aircraft to Dunkirk to defend the UK from Zeppelins. The officers' cars followed them and these began to be used to rescue downed reconnaissance pilots in the battle areas. They mounted machine guns on them and as these excursions became increasingly dangerous, they improvised boiler plate armoring on the vehicles provided by a local shipbuilder. In London Murray Sueter ordered "fighting cars" based on Rolls-Royce, Talbot and Wolseley chassis. By the time Rolls-Royce Armoured Cars arrived in December 1914, the mobile period on the Western Front was already over.

More tactically important was the development of formed units of armored cars, such as the Canadian Automobile Machine Gun Brigade, which was the first fully mechanized unit in the history. The brigade was established on September 2, 1914, in Ottawa, as Automobile Machine Gun Brigade No. 1 by Brigadier-General Raymond Brutinel. The brigade was originally equipped with eight Armoured Autocars mounting two machine guns. By 1918 Brutinel's force consisted of two motor machine gun brigades (each of five gun batteries containing eight weapons apiece). The brigade, and its armored cars, provided yeoman service in many battles, notably at Amiens. The RNAS section became the Royal Naval Armoured Car Division reaching a strength of 20 squadrons before disbanded in 1915. and the armoured cars passing to the army as part of the Machine Gun Corps. Only NO.1 Squadron was retained; it was sent to Russia. As the Western Front turned to trench warfare unsuitable to wheeled vehicles, the armoured cars were moved to other areas.

The 2nd Duke of Westminster took No. 2 Squadron of the RNAS to France in March 1915 in time to make a noted contribution to the Second Battle of Ypres, and thereafter the cars with their master were sent to the Middle East to play a part in the British campaign in Palestine and elsewhere The Duke led a motorised convoy including nine armoured cars across the Western Desert in North Africa to rescue the survivors of the sinking of the SS Tara which had been kidnapped and taken to Bir Hakiem.

In Africa, Rolls Royce armoured cars were active in German South West Africa and Lanchester Armoured Cars in British East Africa against German forces to the south.

Armored cars also saw action on the Eastern Front. From 18 February - 26 March 1915, the German army under General Max von Gallwitz attempted to break through the Russian lines in and around the town of Przasnysz, Poland, (about 110 km / 68 miles north of Warsaw) during the Battle of Przasnysz (Polish: Bitwa przasnyska). Near the end of the battle, the Russians used four Russo-Balt armored cars and a armored car to break through the Germans' lines and force the Germans to retreat.

World War II
The British Royal Air Force (RAF) in the Middle East was equipped with Rolls-Royce Armoured Cars and Morris tenders. Some of these vehicles were among the last of a consignment of ex-Royal Navy armored cars that had been serving in the Middle East since 1915. In September 1940 a section of the No. 2 Squadron RAF Regiment Company was detached to General Wavell's ground forces during the first offensive against the Italians in Egypt. During the actions in the October of that year the company was employed on convoy escort tasks, airfield defense, fighting reconnaissance patrols and screening operations.

During the 1941 Anglo-Iraqi War, some of the units located in the British Mandate of Palestine were sent to Iraq and drove Fordson armored cars. "Fordson" armored cars were Rolls-Royce armored cars which received new chassis from a Fordson truck in Egypt.

By the start of the new war, the German army possessed some highly effective reconnaissance vehicles, such as the Schwerer Panzerspähwagen. The Soviet BA-64 was influenced by a captured Leichter Panzerspähwagen before it was first tested in January 1942.

In the second half of the war, the American M8 Greyhound and the British Daimler Armoured Cars featured turrets mounting light guns (40 mm or less). As with other wartime armored cars, their reconnaissance roles emphasized greater speed and stealth than a tracked vehicle could provide, so their limited armor, armament and off-road capabilities were seen as acceptable compromises.

Military use
A military armored car is a type of armored fighting vehicle having wheels (from four to ten large, off-road wheels) instead of tracks, and usually light armor. Armored cars are typically less expensive and on roads have better speed and range than tracked military vehicles. They do however have less mobility as they have less off-road capabilities because of the higher ground pressure. They also have less obstacle climbing capabilities than tracked vehicles. Wheels are more vulnerable to enemy fire than tracks, they have a higher signature and in most cases less armor than comparable tracked vehicles. As a result, they are not intended for heavy fighting; their normal use is for reconnaissance, command, control, and communications, or for use against lightly armed insurgents or rioters. Only some are intended to enter close combat, often accompanying convoys to protect soft-skinned vehicles.

Light armored cars, such as the British Ferret are armed with just a machine gun. Heavier vehicles are armed with autocannon or a large caliber gun. The heaviest armored cars, such as the German, World War II era Sd.Kfz. 234 or the modern, US M1128 Mobile Gun System, mount the same guns that arm medium tanks.

Armored cars are popular for peacekeeping or internal security duties. Their appearance is less confrontational and threatening than tanks, and their size and maneuverability is said to be more compatible with tight urban spaces designed for wheeled vehicles. However, they do have a larger turning radius compared to tracked vehicles which can turn on the spot and their tires are vulnerable and are less capable in climbing and crushing obstacles. Further, when there is true combat they are easily outgunned and lightly armored. The threatening appearance of a tank is often enough to keep an opponent from attacking, whereas a less threatening vehicle such as an armored car is more likely to be attacked.

Many modern forces now have their dedicated armored car designs, to exploit the advantages noted above. Examples would be the M1117 Armored Security Vehicle of the USA or Alvis Saladin of the post-World War II era in the United Kingdom.

Alternatively, civilian vehicles may be modified into improvised armored cars in ad hoc fashion. Many militias and irregular forces adapt civilian vehicles into AFVs (armored fighting vehicles) and troop carriers, and in some regional conflicts these "technicals" are the only combat vehicles present. On occasion, even the soldiers of national militaries are forced to adapt their civilian-type vehicles for combat use, often using improvised armor and scrounged weapons.

Scout cars
In the 1930s, a new sub-class of armored car emerged in the United States, known as the scout car. This was a compact light armored car which was either unarmed or armed only with machine guns for self-defense. Scout cars were designed as purpose-built reconnaissance vehicles for passive observation and intelligence gathering. Armored cars which carried large caliber, turreted weapons systems were not considered scout cars. The concept gained popularity worldwide during World War II and was especially favored in nations where reconnaissance theory emphasized passive observation over combat.

Examples of armored cars also classified as scout cars include the Soviet BRDM series, the British Ferret, the Brazilian EE-3 Jararaca, the Hungarian D-442 FÚG, and the American Cadillac Gage Commando Scout.

title: Armored car (military)


text:
Self-propelled anti-aircraft weapon

An anti-aircraft vehicle, also known as a self-propelled anti-aircraft gun (SPAAG) or self-propelled air defense system (SPAD), is a mobile vehicle with a dedicated anti-aircraft capability.

Specific weapon systems used include machine guns, autocannons, larger guns, or surface-to-air missiles, and some mount both guns and longer-ranged missiles (e.g. the Pantsir-S1). Platforms used include both trucks and heavier combat vehicles such as armored personnel carriers and tanks, which add protection from aircraft, artillery, and small arms fire for front line deployment.

Anti-aircraft guns are usually mounted in a quickly-traversing turret with a high rate of elevation, for tracking fast-moving aircraft. They are often in dual or quadruple mounts, allowing a high rate of fire. In addition, most anti-aircraft guns can be used in a direct-fire role against surface targets to great effect. Today, surface-to-air missiles (generally mounted on similar turrets) have largely supplanted anti-aircraft guns, but they may return as a cheap way to counter unmanned aerial systems (drones), cruise missiles, and ultralight aircraft.

World War I
Anti-aircraft machine guns have long been mounted on trucks, and these were quite common during World War I. A predecessor of the WWII German "88" anti-aircraft gun, the WWI German 77 mm anti-aircraft gun, was truck-mounted and used to great effect against British tanks.

The British QF 3 inch 20 cwt was mounted on trucks for use on the Western Front. The British also had a first dedicated anti aircraft weapon, the QF 1-pounder pom-pom. Mounted on a armoured truck titled the Pierce-Arrow armoured AA lorry, which was produced in limited numbers and only seeing service throughout 1915. Towards the end of the war Germany produced three prototype SPAAGs with AA guns mounted on A7V chassis known as the A7V Flakpanzer.

Inter-war period
Between the two World Wars, the United Kingdom developed the Birch gun, a general-purpose artillery piece on an armoured tracked chassis capable of maintaining formation with their current tanks over terrain. The gun could be elevated for anti-aircraft use.

The first tracked SPAAG-design to be manufactured in series was most likely the British/Siamese Vickers Armstrong "Type 76" (per Buddhist year 2476 = 1933 CE), as named by the Royal Siamese Army, a SPAAG based on the chassis of the Dragon, Medium, Mark IV artillery tractor (Vickers Mk.E 6-ton light tank derivative), mounting a revolving Vickers 40 mm QF 2 pounder pom-pom autocannon in an open fighting compartment. About 26 were sold to Siam in 1932 and saw action as infantry support guns and AA guns during the Franco-Thai war (1940-1941) along with 30 Vickers Mk.E Type B 6-ton tanks. Despite being the first tracked SPAAG en masse, the open-top design of the Vickers Type 76 made it outdated even by the early 1930s.

The first modern SPAAG to be produced was most likely the Swedish Landsverk L-62 Anti in 1936, featuring a tracked armoured body with a revolving turret, a so-called anti-aircraft tank. It was based on a widened chassis of the Landsverk L-60 light tank and was armed with a Bofors 40 mm Automatic Gun L/60 in an open-top revolving turret. The design was bought by Hungary just prior to the war and Finland ordered a refined model in 1941, known as the Anti II.

By the late 1930s, the British had developed a version of the Mk.VI Light Tank armed with four machine guns that were known as Light Tank AA Mk.I, and also a twin 15 mm version based on the Light Tank Mk.V was built. Among early pre-war pioneers of self-propelled AA guns were the Germans. By the time of the war, they fielded the Sd.Kfz. 10/4 and Sd.Kfz. 6/2, cargo half-tracks mounting single 20 mm or 37 mm AA guns (respectively). Later in the war similar German half-tracks mounted quadruple 20 mm weapons.

World War II
Larger guns followed on larger trucks, but these mountings generally required off-truck setup in order to unlimber the stabilizing legs these guns needed. One exception to this rule was the Italian Cannone da 90/53 which was highly effective when mounted on trucks, a fit known as the "autocannoni da 90/53". The 90/53 was a feared weapon, notably in the anti-tank role, but only a few hundred had been produced by the time of the armistice in 1943.

Other nations tended to work on truck chassis. Starting in 1941, the British developed the "en portee" method of mounting an anti-tank gun (initially a 2 pounder) on a truck. This was to prevent the weapon from being damaged by long-distance towing across rough, stony deserts, and it was intended only to be a carrying method, with the gun unloaded for firing. However, crews tended to fire their weapons from their vehicles for the mobility this method provided, with consequent casualties. This undoubtedly inspired their Morris C9/B (officially the "Carrier, SP, 4x4, 40 mm AA"), a Bofors 40 mm AA gun mounted on a chassis derived from the Morris "Quad" Field Artillery Tractor truck. Similar types, based on 3-ton lorries, were produced in Britain, Canada and Australia, and together formed the most numerous self-propelled AA guns in British service.

The U.S. Army brought truck-towed Bofors 40 mm AA guns along with truck-mounted units fitted with mechanized turrets when they sailed, first for Great Britain and then onto France. The turrets carried four .50 inch (12.7 mm) machine guns, which were designed to be adjusted to converge at the single point where enemy aircraft were expected to appear at low altitude in conduction of strafing runs directed at large infantry and field artillery units.

Interest in mobile AA turned to heavier vehicles with the mass and stability needed to easily train weapons of all sizes. Probably the desire, particularly in German service, for anti-aircraft vehicles to be armoured for their own protection also assisted this trend.

The concept of using armored SPAAG (anti-aircraft tanks) en masse was pioneered by Hungary during World War II with the production of the 40M Nimrod, a license-produced version of the previously mentioned late 1930s Landsverk L-62 Anti I SPAAG. Germany followed later with their "Flakpanzer" series. German World War II SPAAGs include the Möbelwagen, Wirbelwind, Ostwind and Kugelblitz. Other forces followed with designs of their own, notably the American M16 created by mounting quadruple M2HB Browning machine guns on a M3 Half-track.

The British developed their own SPAAGs throughout the war mounting multiple machine guns and light cannon on various tank and armoured car chassis and by 1943, the Crusader AA tanks, which mounted the Bofors 40 mm gun or two-three Oerlikon 20 mm cannon. Although used during the Normandy landings, by that point German aircraft were contained by the Allies own air forces and they were largely unneeded.

Cold War and later
The introduction of jet engines and the subsequent rough doubling of aircraft speeds greatly reduced the effectiveness of the SPAAG against attack aircraft. A typical SPAAG round might have a muzzle velocity on the order of 1000 m/s and might take as long as two to three seconds to reach a target at its maximum range. An aircraft flying at 1000 km/h is moving at a rate of about 280 m/s. This means the aircraft will have moved hundreds of meters during the flight time of the shells, greatly complicating the aiming problem to the point where close passes were essentially impossible to aim using manual gunsights. This speed also allowed the aircraft to rapidly fly out of range of the guns; even if the aircraft passes directly over the SPAAG, it would be within its firing radius for under 30 seconds.

SPAAG development continued through the early 1950s with ever-larger guns, improving the range and allowing the engagement to take place at longer distances where the crossing angle was smaller and aiming was easier. Examples including the 40 mm U.S. M42 Duster and the 57 mm Soviet ZSU-57-2. However, both were essentially obsolete before they entered service, and found employment solely in the ground-support role. The M42 was introduced to the Vietnam War to counter an expected North Vietnamese air offensive, but when this failed to materialize it was used as an effective direct-fire weapon. The ZSU-57 found similar use in the Yugoslav Wars, where its high-angle fire was useful in the mountainous terrain.

By the late 1950s, the US Army had given up on the SPAAG concept, considering all gun-based weapons to be useless against modern aircraft. This belief was generally held by many forces, and the anti-aircraft role turned almost exclusively to missile systems. The Soviet Union remained an outlier, beginning the development of a new SPAAG in 1957, which emerged as the ZSU-23-4 in 1965. This system included search-and-track radars, fire control, and automatic gun-laying, greatly increasing its effectiveness against modern targets. The ZSU-23 proved very effective when used in concert with SAMs; the presence of SAMs forced aircraft to fly low to avoid their radars, placing them within range of the ZSUs.

The success of the ZSU-23 led to a resurgence of SPAAG development. This was also prompted by the introduction of attack helicopters in the 1970s, which could hide behind terrain and then "pop up" for an attack lasting only a few tens of seconds; missiles were ineffective at low altitudes, while the helicopters would often be within range of the guns for a rapid counterattack. Notable among these later systems is the German Gepard, the first western SPAAG to offer performance equal to or better than the ZSU. This system was widely copied in various NATO forces.

SPAAG development continues, with many modern examples often combining both guns and short-range missiles. Examples include the Soviet/Russian Tunguska-M1, which supplanted the ZSU-23 in service, the newer versions of the Gepard, the Chinese Type 95 SPAAA, and the British Marksman turret, which can be used on a wide variety of platforms. Some forces, like the US Army and USMC have mostly forgone self-propelled guns in favor of systems with short-range infrared-guided surface-to-air missiles in the AN/TWQ-1 Avenger and M6 Linebacker, which do not require radar to be accurate and are generally more reliable and cost-effective to field, though their ability to provide ground support is more limited. The U.S. Army did use the M163 VADS and developed the prototype design of the M247 Sergeant York.

Present day
Modern SPAAGs usually have short-range missiles for longer range engagement. The Pantsir system from Russia is primarily a missile battery, although it does have twin cannons as secondary armament.

Some examples of modern SPAAG:

title: Self-propelled anti-aircraft weapon


text:
AZ Alkmaar

Alkmaar Zaanstreek, better known internationally as AZ Alkmaar, or simply and most commonly as AZ in the Netherlands, is a Dutch professional football club from Alkmaar and the Zaan district. The club plays in the Eredivisie, the highest professional football league in the Netherlands.

AZ won the Eredivisie in 1980–81 and 2008–09. In the same season as their first league title, they also reached the UEFA Cup Final, which they lost to Ipswich Town. The team has won the KNVB Cup on four occasions, and one Johan Cruyff Shield.

1910–1972: Foundation and first years
AZ was founded on 10 May 1967 as AZ '67, the result of a merger of Alkmaar '54 and FC Zaanstreek. Alkmaar '54 was founded as a professional team in April 1954 to play in the 10-team NBVB league, created because the Royal Dutch Football Association (KNVB) refused to organize a professional league (the KNVB took over in 1955). Alkmaar '54, and by extension AZ, played the first professional match in the Netherlands: on 14 August 1954, they won 3–0 at home against Venlo '54, with Klaas Smit scoring the first and third goal. After winning the Eerste Divisie in 1960–61, it played one year in the Eredivisie.

FC Zaanstreek had been playing since 1910 as the Kooger Football Club (KFC). KFC had nearly become national champion in 1934 through a narrow loss to Ajax in the finals. The team became professional in 1955. In 1964 the professional part of KFC was renamed FC Zaanstreek, while the amateurs played on as KFC.

Also in 1964, the brothers Cees and Klaas Molenaar, former players and trainers for KFC and owners of a growing appliance store chain, sought to create a powerful football team in Zaanstreek by merging the two local professional teams: KFC and Zaanlandsche Football Club. After the ZFC leadership thwarted this attempt, the Molenaars successfully merged FC Zaanstreek with Alkmaar '54 in 1967. FC Zaanstreek had finished 7th and Alkmaar '54 12th in 1966–67 Eerste Divisie. The team would be based in Alkmaar, though the second team originally trained and played in Koog aan de Zaan.

1972–1985: Molenaar years
Partially through the hiring of expensive foreign players, the new club soon acquired large debts. In 1972, the Molenaar brothers bailed it out and invested heavily in the club, to the point that AZ '67 were successful in the late 1970s and early '80s, regularly playing European football from 1977 to 1982 while also winning three KNVB Cups over that period.

After four close league campaigns, AZ finally became Dutch champions in 1981, becoming the only team other than the "big three" of Ajax, Feyenoord and PSV to do so in a 44-year period spanning from 1965 to 2009 (when AZ once again won the league title). They won the title with overwhelming power, winning 27 of 34 matches and only losing once, while scoring a club record 101 goals and conceding just 30. That same season, AZ reached the final of the UEFA Cup, losing 5–4 on aggregate to Ipswich Town. The next year, in the European Cup, they lost in the second round 3–2 on aggregate to Liverpool.

Georg Keßler was AZ's manager over most of these years (1978–82), while star players included: Kees Kist, the club's highest ever goalscorer with 212 goals and the first ever Dutchman to win the European Golden Boot in 1979 when he scored 34 goals in a season; Jan Peters, who played 120 matches for AZ during this period scoring 30 goals from midfield; and Hugo Hovenkamp, who played 239 matches in defence for AZ from 1975 to 1983, as well as receiving 31 caps for the Netherlands national team from 1977 to 1983 and playing each match in UEFA Euro 1980 while an AZ player. Additional stars included John Metgod, who spent six years at AZ playing 195 matches as a defender, scoring 26 goals including a goal against Ipswich Town in the final of the UEFA Cup. Like Hovenkamp, Metgod was also included in the Dutch squad for Euro 1980. Meanwhile, Danish forward Kristen Nygaard spent ten years at AZ, scoring 104 goals in 363 matches between 1972 and 1982.

1985–1993: Interim years
Co-owner Cees Molenaar died in 1979. AZ's fortunes deteriorated after his brother, Klaas Molenaar, left the club in 1985. After several mid-table finishes in previous seasons, AZ was relegated in 1988 from the Eredivisie, ending the season on 28 points from 34 matches and falling to the Eerste Divisie due to the superior goal difference of Roda JC. This relegation was significant since it occurred just seven years after the club's historic domestic double and marked the end of AZ's first period of success in Dutch football. Following this, AZ spent much of the next decade in the second tier, struggling to find a return to the top flight.

1993–2009: Scheringa years
The involvement of businessman Dirk Scheringa in the mid-1990s marked the revival of the club as AZ returned to the Eredivisie, winning the 1997-98 Eerste Divisie title. The club achieved consecutive finishes around the middle positions in the league until ending up in third place in the 2004-05 Eredivisie season, AZ's highest position for 23 years. In the summer of 2006, the club moved to a new 17,000 capacity stadium, AZ Stadion.

Despite playing strongly for the majority of the 2006–07 season, AZ's season ended in disappointment. First, entering the last matchday of the 2006–07 Eredivisie season, AZ led PSV and Ajax on goal difference at the top of the league table, but ended up third after losing their last match against 16th placed team Excelsior, AZ played with ten men for 80 minutes. Additionally, AZ then lost the KNVB Cup final to Ajax 8–7 after a penalty shoot-out, while also falling to Ajax over two play-off matches for participation in the Champions League. After the season, key players like Tim de Cler, Danny Koevermans and Shota Arveladze left the team.

A remarkable run ended in the 2007–08 season: after AZ lost a group stage match against Everton (3–2) in the UEFA Cup, the club's unbeaten run of 32 home matches in European competitions – lasting from 1977 to 2007 – ended. AZ had a poor season, suffering elimination in the first round of the KNVB Cup and the group stage of the UEFA Cup, as well as finishing the 2007–08 Eredivisie in a disappointing 11th place. Towards the latter stages of the season, in March 2008, AZ manager Louis van Gaal had initially tendered his resignation, but after protests the players and directors, he rescinded his resignation.

The 2008–09 season had an unpromising start after two opening defeats against NAC Breda and ADO Den Haag. However, starting with a 1–0 victory over defending league champions PSV, AZ did not lose a match in its next 28 matches, including a run of 11-straight matches where AZ did not concede an opposition goal. Three weeks before the end of the season, AZ became Eredivisie champions, edging nearest title rivals Twente and Ajax comfortably. This was a historic achievement for the club as this was the first title-winning season for 28 years, and it also meant a return to the UEFA Champions League.

Being league champions, AZ qualified for the Champions League for only the second time. It was drawn into a group alongside Arsenal FC, Standard Liège and Olympiacos but only took four points from six matches and finished bottom of their group.

2009–2014: Advocaat–Verbeek years
For the 2009–10 season, Ronald Koeman succeeded Louis van Gaal, who had departed to manage Bayern Munich after leading AZ to the championship. Koeman was officially hired on 17 May 2009, but on 5 December, AZ announced he was no longer in charge of the club after losing 7 of his first 16 matches. Former Rangers and Zenit Saint Petersburg manager Dick Advocaat took over for the remainder of the season. Under Advocaat, AZ achieved solid results and secured European football for the next season.

For the 2010–11 season, AZ appointed Gertjan Verbeek as its new manager. They finished the 2010–11 Eredivisie in fourth place, thus securing Europa League football for the next season, while in the KNVB Cup, AZ reached the last eight, where they were beaten by rivals Ajax by a 1–0 scoreline. AZ also finished third in their Europa League group, thus failing to qualifying for the competition's knockout round.

In the 2011–12 season, AZ finished fourth in the Eredivisie, though performed significantly better in cup competitions, reaching the semi-finals in the KNVB Cup (losing to Heracles after extra time) and the quarter-finals in the Europa League. In the latter, the club ultimately lost to Valencia after having defeated Udinese, Anderlecht, Malmö FF, Austria Wien, Metalist Kharkiv, Aalesund and Baumit Jablonec to reach that stage.

On 21 December 2011, during the quarter-finals of the 2011–12 KNVB Cup, a 19-year-old Ajax fan invaded the Amsterdam Arena pitch in the 36th minute with Ajax winning 1–0, attacking AZ goalkeeper Esteban Alvarado. The fan slipped and Alvarado kicked the fan twice, prompting the referee to issue the goalkeeper a red card. Following this, AZ manager Gertjan Verbeek ordered his players to leave the pitch for the dressing room in protest. The match was later played on 19 January 2012, with Alvarado's red card rescinded; AZ won 3–2.

The 2012–13 season started in the Europa League with a qualifying play-off round against Guus Hiddink's Anzhi Makhachkala. AZ was hammered 6–0 on aggregate. Disappointingly, AZ finished tenth in the 2012–13 Eredivisie, although the club won the 2012–13 KNVB Cup after defeating PSV 2–1 in the final. As cup winners, AZ automatically qualified for the 2013–14 Europa League.

In September 2013, just one day after emphatically beating PSV, at the time the league leaders, Verbeek was dismissed as first team manager by the club due to "a lack of chemistry" between management and players. He was replaced by Dick Advocaat for the remainder of the season until a permanent replacement could be found. Advocaat took AZ to the semi-finals of the KNVB Cup, the quarter-finals of the Europa League and eighth in the league, ultimately losing to Groningen in the Europa League play-off final round (their 58th match of the season, a club record).

2014–2019: Van den Brom years
The 2014–15 season began with a new manager, former Heerenveen manager and Ajax great Marco van Basten. However, after just three matches into the season, Van Basten resigned as manager to become assistant manager under Alex Pastoor, citing heavy stress as the main reason. Pastoor was the interim manager during two matches under Van Basten's absence and received the official title on 16 September, but contract negotiations failed and he left the club just two days later. A week later, John van den Brom was appointed manager. Under Van den Brom, AZ quickly rose up to the sub-top, eventually finished the season in third place, surpassing Feyenoord on the final season's matchday and qualifying for the 2015–16 Europa League.

The 2015–16 Eredivisie started with AZ selling most of its first-team players from the previous season during the summer transfer period. As a response, AZ bought players from other Dutch clubs, notably Vincent Janssen from Almere City, Alireza Jahanbakhsh from NEC and Ben Rienstra from PEC Zwolle. In December, it was announced free agent Ron Vlaar signed a contract until the end of the season after training with the club for a few weeks prior. Vlaar quickly became team captain and helped lift AZ from tenth place to a fourth-place finish in the league. Along this rise, new signing Vincent Janssen scored 27 goals for the club, earning him the Eredivisie top goalscorer title. In the 2015–16 KNVB Cup, AZ made it to the semi-finals, losing 3–1 to Feyenoord. AZ won the first two qualification rounds to qualify for the 2015–16 Europa League group stage, but finished last in their group.

At the start of the 2016–17 Eredivisie, AZ sold last season's performer Vincent Janssen to Tottenham Hotspur and long-time midfielder Markus Henriksen to Hull City. In the 2016–17 Europa League, AZ finished second in Group D, surviving the group stage for the third time in five seasons.

Since 2019: Slot–Jansen years
After an excellent 2019/20 season in which AZ beat league leaders Ajax home and away, aided by consistent performances from youth academy talents such as Teun Koopmeiners, Myron Boadu, Calvin Stengs and Owen Wijndal, the season was forced to end early due to the effects of the COVID-19 pandemic. Joint on points with Ajax at the top of the table, AZ were given second place on goal difference, and subsequently earned Qualification to the Champions League second qualifying round.

A poor start to their 2020/21 Eredivisie campaign saw AZ draw five games in a row, before eventually picking up a victory against RKC Waalwijk on 1 November 2020.

AZ also struggled in European competitions this season. Despite a strong start, with a 3–1 extra time come back against Viktoria Plzen in the Champions League qualifiers, the club lost 2–0 to Dynamo Kiev several weeks later, seeing them fall back into the Europa League. After victory against Napoli and Rijeka early in the pool stages, AZ was on track to advance, though lost to Real Sociedad away, obtained a 0–0 draw in the reverse fixture, and also drew 1–1 with Napoli. Following these results, AZ needed to defeat Rijeka away to advance. However, the departure the week before the game of manager Arne Slot saw an unorganised team lose 2–1 to Rijeka, ending their European dream.

In 2022–2023, AZ stepped up their performance in Europa Conference League play, winning five out of six Group E matches against SC Dnipro-1, Apollon Limassol and Vaduz, then beating Lazio 4–2 on aggregate. However, their run was ended by defeats to West Ham United, with AZ's home leg marred by supporter violence.

Coaching staff
Statistic from January 2024

Jong AZ
Participating in the Eerste Divisie, the reserve squad of AZ trains and plays their home games in Zaanstad.

National team players
''The following players were called up to represent their national teams in international football and received caps during their tenure with AZ Alkmaar:

 * Argentina
 * 🇦🇷 Sergio Romero (2007–2011)
 * Australia
 * 🇦🇺 James Holland (2009–2012)
 * 🇦🇺 Brett Holman (2008–2012)
 * 🇦🇺 Mathew Ryan (2023–2024)
 * Austria
 * 🇦🇹 Kurt Welzl (1978–1981)
 * Belgium
 * 🇧🇪 Stein Huysegems (2003–2006)
 * 🇧🇪 Maarten Martens (2006–2014)
 * 🇧🇪 Sébastien Pocognoli (2007–2010)
 * 🇧🇪 Gill Swerts (2008–2011)
 * Cameroon
 * 🇨🇲 Willie Overtoom (2013–2014)
 * Costa Rica
 * 🇨🇷 Esteban Alvarado (2010–2015)
 * Denmark
 * 🇩🇰 Henrik Eigenbrod (1982–1984)
 * 🇩🇰 Kristen Nygaard (1972–1982)
 * 🇩🇰 Kenneth Perez (2000–2006)
 * 🇩🇰 Simon Poulsen (2008–2012; 2014–2015)
 * Estonia
 * 🇪🇪 Ragnar Klavan (2009–2012)
 * Finland
 * 🇫🇮 Niki Mäenpää (2011–2012)
 * 🇫🇮 Niklas Moisander (2008–2012)
 * 🇫🇮 Juha Reini (2002–2006)
 * Georgia
 * Shota Arveladze (2005–2007)
 * Ghana
 * 🇬🇭 Kamal Sowah (2022)
 * Greece
 * 🇬🇷 Pantelis Chatzidiakos (2015–2023)
 * 🇬🇷 Vangelis Pavlidis (2021–2024)
 * Hungary
 * 🇭🇺 Milos Kerkez (2022–2023)
 * Iceland
 * 🇮🇸 Joey Guðjónsson (2006–2007)
 * 🇮🇸 Albert Guðmundsson (2018–2022)
 * 🇮🇸 Jóhann Berg Guðmundsson (2009–2014)
 * 🇮🇸 Kolbeinn Sigþórsson (2010–2011)
 * 🇮🇸 Grétar Steinsson (2006–2008)
 * Iran
 * 🇮🇷 Alireza Jahanbakhsh (2015–2018)

 * Japan
 * 🇯🇵 Yukinari Sugawara (2020–2024)
 * Mexico
 * 🇲🇽 Héctor Moreno (2008–2011)
 * Morocco
 * 🇲🇦 Zakaria Aboukhlal (2019–2022)
 * 🇲🇦 Nourdin Boukhari (2007)
 * 🇲🇦 Ali Elkhattabi (2001–2006)
 * 🇲🇦 Abdelkrim El Hadrioui (1998–2002)
 * 🇲🇦 Mounir El Hamdaoui (2007–2010; 2015–2016)
 * 🇲🇦 Oussama Idrissi (2018–2020)
 * 🇲🇦 Adil Ramzi (2004–2006)
 * 🇲🇦 Tarik Sektioui (2004–2006)
 * Netherlands
 * 🇳🇱 Peter Arntz (1976–1985)
 * 🇳🇱 Roy Beerens (2011–2014)
 * 🇳🇱 Marco Bizot (2017–2021)
 * 🇳🇱 Myron Boadu (2017–2021)
 * 🇳🇱 Dries Boussatta (1998–2002)
 * 🇳🇱 Tim de Cler (2002–2007)
 * 🇳🇱 Barry van Galen (1997–2006)
 * 🇳🇱 Willem van Hanegem (1976–1979)
 * 🇳🇱 Hugo Hovenkamp (1975–1983)
 * 🇳🇱 Kew Jaliens (2004–2011)
 * 🇳🇱 Vincent Janssen (2015–2016)
 * 🇳🇱 Jos Jonker (1980–1983)
 * 🇳🇱 Danny Koevermans (2005–2007)
 * 🇳🇱 Kees Kist (1972–1982; 1984–1985)
 * 🇳🇱 Teun Koopmeiners (2017–2021)
 * 🇳🇱 Jan Kromkamp (2000–2005)
 * 🇳🇱 Denny Landzaat (2003–2006)
 * 🇳🇱 Adam Maher (2010–2013; 2018–2019)
 * 🇳🇱 Dirk Marcellis (2010–2015)
 * 🇳🇱 Bruno Martins Indi (2020–present)
 * 🇳🇱 Joris Mathijsen (2004–2006)
 * 🇳🇱 Martijn Meerdink (2002–2007)
 * 🇳🇱 David Mendes da Silva (2006–2010)
 * 🇳🇱 John Metgod (1976–1982)
 * 🇳🇱 Oscar Moens (1996–2003)
 * 🇳🇱 Barry Opdam (1996–2008)
 * 🇳🇱 Jan Peters (1977–1982)
 * 🇳🇱 Henk van Rijnsoever (1974–1982)
 * 🇳🇱 Stijn Schaars (2005–2011)
 * 🇳🇱 Ronald Spelbos (1974–1982)
 * 🇳🇱 Calvin Stengs (2017–2021)
 * 🇳🇱 Guus Til (2016–2019)
 * 🇳🇱 Henk Timmer (2000–2006)
 * 🇳🇱 Pier Tol (1978–1988)

 * Netherlands (continued)
 * 🇳🇱 Nick Viergever (2010–2014)
 * 🇳🇱 Ron Vlaar (2004–2006; 2015–2021)
 * 🇳🇱 Bobby Vosmaer (1974–1978)
 * 🇳🇱 Wout Weghorst (2016–2018)
 * 🇳🇱 Owen Wijndal (2017–2022)
 * 🇳🇱 Demy de Zeeuw (2005–2009)
 * Norway
 * 🇳🇴 Håkon Evjen (2020–2023)
 * 🇳🇴 Markus Henriksen (2012–2017)
 * 🇳🇴 Bjørn Maars Johnsen (2018–2020)
 * 🇳🇴 Fredrik Midtsjø (2017–2022)
 * 🇳🇴 Jonas Svensson (2017–2021)
 * 🇳🇴 David Møller Wolfe (2023–present)
 * Paraguay
 * 🇵🇾 Celso Ortiz (2010–2016)
 * Romania
 * 🇷🇴 Dorin Rotariu (2018–2019)
 * Serbia
 * 🇷🇸 Nemanja Gudelj (2013–2015)
 * Suriname
 * 🇸🇷 Ramon Leeuwin (2020–2021)
 * Sweden
 * 🇸🇪 Rasmus Elm (2009–2012)
 * 🇸🇪 Mattias Johansson (2012–2017)
 * 🇸🇪 Jesper Karlsson (2020–2023)
 * 🇸🇪 Muamer Tanković (2014–2017)
 * 🇸🇪 Pontus Wernbloom (2009–2012)
 * Trinidad & Tobago
 * Levi García (2015–2018)
 * United States
 * 🇺🇸 Jozy Altidore (2011–2013)
 * 🇺🇸 Aron Jóhannsson (2013–2015)
 * 🇺🇸 Djordje Mihailovic (2023–2024)

 * Players in bold actively play for AZ Alkmaar and for their respective national teams. Years in brackets indicate careerspan with AZ.

National team players by Confederation
Member associations are listed in order of most to least amount of current and former AZ players represented Internationally

Players in international tournaments
The following is a list of AZ players who have competed in international tournaments, including the FIFA World Cup, UEFA European Championship, AFC Asian Cup, Africa Cup of Nations, CONCACAF Gold Cup and the Copa América. To this date no AZ players have participated in the FIFA Confederations Cup or the OFC Nations Cup while playing for AZ Alkmaar.

Stadium

AZ play its home matches at the AFAS Stadion, located in the southern part of the city of Alkmaar. The stadium, which is directly owned by the club, was opened in 2006 and replaced the old Alkmaarderhout venue as the DSB Stadion. The stadium currently has a capacity of 17,023. During its design stages, the name Victorie Stadion was frequently used, referring to the Dutch War of Independence, the phrase "In Alkmaar begint de victorie" (Victory begins in Alkmaar) in particular. Until now, this name has not been officially in use, the board instead opting for sponsorship deals because of financial motives. However, to this day, the name maintains a good share of support among the fans.

To further increase revenue, AZ's board of directors decided to expand the capacity of the new stadium to at least 30,000 somewhere in the future. The extension will be realised by constructing a second tier to three of the four stands. The main stand with all technical areas, VIP and sponsor and media facilities will remain in place. These plans, however, were put on hold after the DSB bankruptcy and there are no current plans to increase the capacity.

In October 2009, sponsor DSB Bank was declared bankrupt. The stadium name temporarily changed from DSB Stadion to AZ Stadion, as it was considered undesirable that the stadium was linked with a non-existent bank. In February 2010, a new main sponsor was found in construction works service provider BUKO, based in Beverwijk.

A year later, in the 2010–11 season, AFAS Software took over as official stadium sponsor. The current external name of the ground is the AFAS Stadion.

On 10 August 2019, the roof of the stadium partially collapsed. No people were injured during the incident. As the result AZ spent the rest of the year playing home matches at the Cars Jeans Stadion in The Hague whilst the damaged roof was being removed, before returning to the stadium on 15 December 2019, beating Ajax 1–0 in their first match back. AZ played the rest of the 2019/20 season, until the COVID-19 pandemic cut it short, without a roof. During the 2020/21 season, a new roof was installed, held up by 20 crane-like arms on three sides and a so-called mega truss on the main stand. The renewed stadium, which also included a capacity upgrade of nearly 2,500 seats for a new total capacity of 19,500, was officially opened on 11 September 2021, before the home game against PSV.

Domestic results
Below is a table with AZ's domestic results since the introduction of professional football in 1956.

Alkmaar '54

 * Gerrit van Wijhe (1954–1956)
 * Kick Smit (1956–1958)
 * Ludwig Veg (1 July 1958 – 30 June 1960)
 * Piet de Wolf (1960–1961)
 * Bonnie Bult (1961–1962)
 * Arie Rentenaar (1962–1963)
 * Ludwig Veg (1 July 1963 – 30 June 1965)
 * 🏴 Barry Hughes (1 July 1965 – 30 June 1967)

KFC / FC Zaanstreek

 * 🏴 Bob Kelly (1955–1956)
 * Wim Blokland (1956–1958)
 * Klaas Molenaar (1958–1960)
 * Toon Bruins Slot (1960–1963)
 * Joop de Kubber (1963–1964)
 * Piet de Wolf (1964–1965)
 * Toon van den Enden (1965–1966)

AZ '67

 * 🏴 Lesley Talbot (1 July 1967 – 30 June 1968)
 * Wim Blokland (1968–1969)
 * Robert Heinz (1969–1971)
 * Cor van der Hart (1 July 1971 – 30 June 1973)
 * Joop Brand (1 July 1973 – 30 June 1976)
 * Hans Kraay Sr. (1 July 1976 – 30 June 1977)
 * Jan Notermans (1977)
 * Cor van der Hart (1 July 1977 – 30 June 1978)
 * Georg Keßler (1 July 1978 – 30 June 1982)
 * Hans Eijkenbroek (1 July 1982 – 30 June 1983)
 * Piet de Visser (1 July 1983 – 30 June 1985)
 * Joop Brand (1 July 1985 – 30 June 1986)
 * Han Berger (1 July 1986 – 31 December 1986)

AZ

 * Hans Eijkenbroek (1987 – 30 June 1989)
 * Hans van Doorneveld (1 July 1989 – 30 June 1990)
 * Henk Wullems (1 July 1990 – 30 June 1993)
 * Piet Schrijvers (1 July 1993 – 30 June 1994)
 * Theo Vonk (1 July 1994 – 28 February 1997)
 * Hans de Koning (interim) (28 February 1997 – 30 June 1997)
 * Willem van Hanegem (1 July 1997 – 30 June 1999)
 * Gerard van der Lem (1 July 1999 – 30 March 2000)
 * Henk van Stee (31 March 2000 – 30 October 2002)
 * Co Adriaanse (30 October 2002 – 30 June 2005)
 * Louis van Gaal (1 July 2005 – 30 June 2009)
 * Ronald Koeman (1 July 2009 – 5 December 2009)
 * Martin Haar (interim) (5 December 2009 – 10 December 2009)
 * Dick Advocaat (10 December 2009 – 30 June 2010)
 * Gertjan Verbeek (1 July 2010 – 29 September 2013)
 * Martin Haar (interim) (29 September 2013 – 15 October 2013)
 * Dick Advocaat (15 October 2013 – 30 June 2014)
 * Marco van Basten (30 June 2014 – 16 September 2014)
 * John van den Brom (29 September 2014 – 30 June 2019)
 * Arne Slot (1 July 2019 – 5 December 2020)
 * Pascal Jansen (5 December 2020 – 17 January 2024)
 * 🇧🇪 Maarten Martens (17 January 2024 – present)

title: AZ Alkmaar