Infantry guns are designed to provide direct organic support for infantry

Infantry

Infantrymen are soldiers who are specifically trained for the role of fighting on foot to engage the enemy face to face and have historically borne the brunt of the casualties of combat in wars. As the oldest branch of combat arms, they are the backbone of armies...

 forces. They fire a range of shells, primarily in a direct-fire mode. Most are lightweight and capable of being manhandled for limited mobility to accompany infantry.

Towed infantry guns

Caliber Caliber In guns including firearms, caliber or calibre is the approximate internal diameter of the barrel in relation to the diameter of the projectile used in it....  (mm)	Weapon name	Country of origin	Period
37	Canon d'Infanterie de 37 modèle 1916 TRP		World War I
37	Type 11 infantry gun		World War II
37	37-mm trench gun M1915	Russian Empire	World War I
38	Hughes Breech-loading cannon Hughes Breech-loading cannon The Hughes breech-loading cannon 38.1mm gun was designed in 1861 by the Confederate States of America and produced by the manufacturer Street & Hungerford Company. It was a breech-loading cannon; the breech of the cannon is uniquely like a bolt-action but has no firing pin in its bolt.-External...	Confederate States of America	American Civil War
40	1.59 inch Breech-Loading Vickers Q.F. Gun, Mk II 1.59 inch Breech-Loading Vickers Q.F. Gun, Mk II The 1.59-inch Breech-Loading Vickers Q.F. Gun, Mk II was a British light artillery piece designed during World War I. Originally intended for use in trench warfare, it was instead tested for air-to-air and air-to-ground use by aircraft...		World War I
75	Bofors 75 mm L/20		Interwar
75	leIG 18	Nazi Germany	World War II
75	leIG 18 F	Nazi Germany	World War II
75	7.5 cm Infanteriegeschütz 37 7.5 cm Infanteriegeschütz 37 The 7.5 cm Infanteriegeschütz 37 was an infantry support gun, used by Germany, during World War II. The guns were originally designated 7.5 cm PaK 37...	Nazi Germany	World War II
75	7.5 cm Infanteriegeschütz 42 7.5 cm Infanteriegeschütz 42 The 7.5 cm Infanteriegeschütz 42 was an infantry support gun, used by Germany, during World War II. The requirement for this weapon came out of combat experience in 1940 when the existing IG 18 was felt to be outdated....	Nazi Germany	World War II
76	76 mm Canon de 76 Fonderie Royale des Canons Canon de 76 FRC The Canon de 76 FRC was a Belgian infantry support gun, produced by the Fonderie Royale des Canons . The gun was typically of 76 mm calibre; however, an optional 47 mm barrel could be fitted instead. The gun was designed for transport via a trailer towed by a vehicle. In 1940, the...
76.2	7.62 cm Infanteriegeschütz L/16.5 7.62 cm Infanteriegeschütz L/16.5 The 7.62 cm Infanteriegeschütz L/16.5 was an infantry gun used by Germany in World War I.German field guns had proven too heavy to accompany the infantry in the assault and the Germans resorted to a variety of solutions in an effort to find something that could help the infantry deal with...	German Empire	World War I World War I World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...
77	7.7 cm Infanteriegeschütz L/20 7.7 cm Infanteriegeschütz L/20 The 7.7 cm Infanteriegeschütz L/20 was an infantry gun used by Germany in World War I. It was designed by Krupp to rectify the shortcomings of the 7.62 cm Infanteriegeschütz L/16.5....	German Empire	World War I World War I World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...
77	7.7 cm Infanteriegeschütz L/27 7.7 cm Infanteriegeschütz L/27 The 7.7 cm Infanteriegeschütz L/27 was an infantry gun used by Germany in World War I. It was intended to replace the 7.7 cm Infanteriegeschütz L/20, but only saw limited service....	German Empire	World War I World War I World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...
150	15 cm sIG 33	Nazi Germany	World War II

Self-propelled infantry guns

Self-propelled infantry guns named Assault guns are guns mounted in armored vehicles designed to provide direct fire support for infantry and armored forces. Typically, the gun is mounted in the hull and the front of the vehicle most heavily armored.

Caliber Caliber In guns including firearms, caliber or calibre is the approximate internal diameter of the barrel in relation to the diameter of the projectile used in it....  (mm)	Weapon name	Country of origin	Period
57	ASU-57 ASU-57 The ASU-57 was a small, lightly constructed Soviet assault gun specifically designed for use by Soviet airborne divisions. From 1960 it was replaced by the ASU-85.-Development history:...		Cold War Cold War The Cold War was the continuing state from roughly 1946 to 1991 of political conflict, military tension, proxy wars, and economic competition between the Communist World—primarily the Soviet Union and its satellite states and allies—and the powers of the Western world, primarily the United States...  (1951)
75	StuG III	Nazi Germany	World War II
75	StuG IV	Nazi Germany	World War II
75	Semovente 75/18 Semovente 75/18 The Semovente 75/18 was an Italian self-propelled gun of the Second World War. It was built by mounting the 75 mm Obice da 75/18 modello 34 mountain gun on the chassis of a M13/40 or M14/41 tank. The first 60 were built using the M13/40 chassis and a subsequent 162 were built on the M14/41...		World War II
75	Semovente 75/34 Semovente 75/34 The Semovente 75/34 was an Italian self-propelled gun in use during World War II. It was built by mounting a 75 mm L34 gun on the chassis of a M15/42 tank. 192 were built before the Italian surrender in September 1943. The vehicle was never used in combat by the Italian army...		World War II
75	Semovente 75/46 Semovente 75/46 The Semovente 75/46 was an Italian self-propelled gun used during World War II. It was built by mounting a 75 mm L46 gun on the chassis of a M15/42 tank. After the armistice, control of the Ansaldo factories fell under German control. The Germans ordered the production of a modified version of the...		World War II
76	Rooikat 76 Rooikat AFV The Rooikat is a wheeled armoured fighting vehicle built in South Africa for the South African Army. It was designed for combat reconnaissance and seek and destroy operations. Its secondary roles include combat support, anti-armour and anti-guerrilla operations...		modern
76.2	SU-76 SU-76 The SU-76 was a Soviet self-propelled gun used during and after World War II.- History :The SU-76 was based on a lengthened and widened version of the T-70 tank chassis...		World War II (1942)
76.2	SU-76i		World War II (1943)
85	ASU-85 ASU-85 The ASU-85 is a soviet-designed airborne self-propelled gun of the Cold War Era. From 1959 it replaced the open-topped ASU-57 in service but was in its turn replaced by the BMD-1 from 1969.-Development history:...		Cold War
90	Semovente 90/53 Semovente 90/53 The Semovente 90/53 was a heavy Italian self-propelled gun and tank destroyer, used by the Italian and German Armies during World War II.-Development:...		World War II
96	Tank, Heavy Assault, Tortoise (A39) Tortoise heavy assault tank The Tank, Heavy Assault, Tortoise was a British heavy assault tank design developed in World War II but never put into mass production. It was developed for the task of clearing heavily fortified areas and as a result favoured armour protection over mobility.Although heavy, at 78 tons, and not...		World War II
105	StuH 42	Nazi Germany	World War II
105	Rooikat 105 Rooikat AFV The Rooikat is a wheeled armoured fighting vehicle built in South Africa for the South African Army. It was designed for combat reconnaissance and seek and destroy operations. Its secondary roles include combat support, anti-armour and anti-guerrilla operations...		Modern
105	Semovente 105/25 Semovente 105/25 The Semovente 105/25 was an Italian tank destroyer in use during World War II. It was constructed by mounting a 105 mm gun that was 25 calibers long in a widened chassis from a M15/42 tank. 30 were built by Fiat-Ansaldo and delivered in 1943 before the Italian surrender in September that year...		World War II
114	BT-42 BT-42 The BT-42 was a Finnish assault gun, constructed during the Continuation War. It was constructed from captured Soviet BT-7 light tanks and British 4.5-inch howitzers from 1918, which had been donated during the Winter War...		World War II
122	SU-122 SU-122 The SU-122 was a Soviet self-propelled howitzer used during World War II. The number "122" in the designation represents the caliber of the main armament—a 122 mm M-30S howitzer.-Development history:...		World War II
122	ISU-122 ISU-122 The ISU-122 was a Soviet self-propelled gun used during World War II.-History:A prototype of the ISU-122 heavy self-propelled gun was built at the Chelyabinsk Kirov Plant, , in December 1943...		World War II (1943)
150	Sturmpanzer IV Brummbär The Sturmpanzer IV was a German armoured infantry support gun based on the Panzer IV chassis used in the Second World War. It was used at the Battles of Kursk, Anzio, Normandy, and helped to put down the Warsaw Uprising...	Nazi Germany	World War II
150	15 cm sIG 33 (Sf) auf Panzerkampfwagen I Panzer I variants -Panzerkampfwagen I Ausf A ohne Aufbau:Actually the first Panzer I vehicles to be built, 15 were completed by the various firms included in the program to develop their industrial capacity and provide initial training vehicles to the Wehrmacht. The Ausf A ohne Aufbau was merely a Panzer I hull...	Nazi Germany	World War II
150	15 cm sIG 33 auf Fahrgestell Panzerkampfwagen II Panzer II The Panzer II was the common name for a family of German tanks used in World War II. The official German designation was Panzerkampfwagen II...	Nazi Germany	World War II
150	15 cm sIG 33/1 on Panzer III chassis Sturm-Infanteriegeschütz 33B The Sturm-Infanteriegeschütz 33B was a German self-propelled heavy infantry gun used during World War II. A new, fully enclosed, and heavily armored superstructure was built on the chassis of the Sturmgeschütz III. It mounted the improved sIG 33/1 infantry gun, offset to the right side, for which...	Nazi Germany	World War II
150	15 cm sIG 33 (Sf) auf Panzerkampfwagen 38(t) Grille (artillery) The Grille series of self propelled artillery vehicles were used by Nazi Germany during World War II. The Grille series was based on the Czech Panzer 38 tank and used a 15 cm sIG 33 infantry gun.-Development:...	Nazi Germany	World War II
152	SU-152 SU-152 The SU-152 was a Soviet heavy self-propelled heavy howitzer used during World War II.It mounted a 152 mm gun-howitzer on the chassis of a KV-1S heavy tank. Later production used IS tank chassis and was re-designated as ISU-152...		World War II (1943)
152	ISU-152 ISU-152 ISU-152 was a Soviet multirole fully enclosed and armored self-propelled gun developed and used during World War II, with a subsequent use, mainly in the Soviet military, till the 1970s.-History:...		World War II (1943)