Soviet self propelled ISU 152

The ISU-152 was a powerful Soviet self-propelled gun used in the Second World War. It was developed from the earlier SU-152 and built on the chassis of the IS heavy tank. It entered service in late 1943 and quickly became one of the most feared armored vehicles of the war.

It was designed by Soviet engineers at Chelyabinsk, with production taking place at the Chelyabinsk Kirov Plant, known as “Tankograd.” Around 1,885 were built during the war, with total production reaching about 3,200 by 1947.

The vehicle was powered by a 12-cylinder V-2IS diesel engine producing about 520 horsepower. Weighing roughly 45 tonnes, it could reach speeds of around 35 km/h. While not fast, it was mobile enough to support advancing troops.

Its main weapon was the massive 152.4 mm ML-20S gun-howitzer. It fired very large shells capable of destroying bunkers, buildings, and even heavy tanks. Although its rate of fire was slow, the sheer power of each shot made it extremely effective. It earned the nickname “Zveroboy,” meaning “Beast Killer,” for its ability to knock out German tanks like the Tiger.

The ISU-152 had strong frontal armor up to about 90 mm, giving good protection. However, it had no rotating turret, so the whole vehicle had to be moved to aim.

It usually had a crew of 4 to 5 men working in cramped conditions. Because of the large ammunition, it could only carry about 20 rounds, and loading was physically demanding.

In combat, it was mainly used to destroy fortified positions and support infantry, especially in urban fighting. It remained in service after the war with upgrades and is remembered as one of the most powerful and effective Soviet assault guns.