KV-1S

A further modification of the KV-1 heavy tank series developed in the summer of 1942. It passed into Red Army service on August 20, 1942. Compared to its predecessors, the KV-1S had several design features which reduced the tank’s weight, and increased its top speed, maneuverability, and durability. However, the 76 mm ZIS-5 gun coupled with reduced and inefficient armoring, made the new vehicle basically equal to the T-34 in terms of battle performance. A total of 1,083 vehicles of this modification were manufactured. This tank was widely used on all fronts of World War II.