Soviet heavy tank IS-4

IS-4 is a Soviet heavy tank that was adopted into service in April 1946. It was mass-produced from 1947 to 1949. For the mid-1940s, the tank had excellent armor protection. At the time it was adopted, no tank gun could penetrate it from a distance of 1,000 meters. One of the features of the vehicle was its original ammunition stowage. In the IS-4, shells were placed in special metal cassettes.