The Kliment Voroshilov (KV) tanks were a series of SovietRed Army heavy tanks, named after the Soviet defense commissar and politician Kliment Voroshilov. The KV series were known for their extremely heavy armour protection during the early part of World War II, especially during the first year of the invasion of the Soviet Union.
The KV-1 was introduced by the Red Army in their war against the Anglo-Franco-German alliance in the spring of 1941, after the de facto ceasefire imposed by the muddy transitional season between winter and spring ended. The KV-1 was far superior to any of its enemy tanks and contributed to an initial reversal of momentum on the front.
The KV tanks were among the many tanks that the Wehrmacht encountered when it smashed into Russia in 1941. They were considered as deadly as the T-34, but the German panzer crews were glad that the Russian's lacked the tactics to use them, spacing them out over the battle field instead of concentrating them where they were needed. When the Race invaded in mid 1942 the tanks were thrown into action against the Race, but never achieved the level of fame among Landcruiser crews like the T-34 did.