KV-2 - Soviet heavy assault tank of the initial period of the Great Patriotic War. The abbreviation KV means “Kliment Voroshilov” - the official name of the serial Soviet heavy tanks of the 1939-1943 edition, named after the hero of the Civil War in Russia, the military and political figure Voroshilov, Kliment Yefremovich. Originally called “KV with a large tower.”