ISU-122 - Heavy Self-Propelled Gun

Known as the younger brother of the ISU-152, the ISU-122 utilized the Soviet Union’s surplus of 122 mm guns and ISU hulls to create an effective and accurate heavy tank destroyer with over twice the rate of fire as the 152 variant. The ISU-122 also featured superior armor and protection when compared to previous Soviet self-propelled guns. After WWII many of the remaining ISU-122s were converted into civilian vehicles to aid in constructing the Soviet Union’s expanding railroad network.