KV series was a production line of a number of heavy tanks Soviet origin. They were baptized in the name of defense and political commissar Kliment Voroshilov. At the time of the invasion of the Soviet Union by Germany in WWII, the KV tanks were better protected from the time, but only accounted for 2% 1 of total Soviet armored forces on 22 June 1941. His initial success in stopping and decimate panzer forces earned him the nickname of "kill Nazis."
