When confronted by the Sturmgeschutz II, during the German Blitzkrieg on the Eastern Front, the Russian military quickly began to design their own assault guns. The result was a tank destroyer based on the T-34 chassis, which was armed with a 122mm howitzer. The vehicle was named the SU-122 with the letters "SU" standing for self-propelled and the number "122" representing the 122mm howitzer. Assault guns had some advantages over tanks during the war. Due to lack of a turret, the vehicle could be built with larger more powerful weapons with lower production costs. However, the main disadvantage was the entire vehicle had to be moved to aim at a target. The SU-122 was produced from December 1942 until the summer of 1944. Only 1,150 SU-122 tank destroyers were built during this time. In July 1943, the vehicle was used for the first time in the battle of Kursk. This vehicle set the foundation for the SU-85 and SU-100 tank destroyers.
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