Comparing: FCM 50 t vs. KV-5

Development was started in December 1945. The vehicle was conceived as an alternative for the AMX 50t and combined archaic features typical of the pre-war French tank-construction industry as well as German innovations. The vehicle was to be equipped with an additional container trailer, equipment for underwater driving, and a demountable mine clearer.

Development was started in June 1941 at the Leningrad Kirov Plant and completed by August, but the German invasion prevented development from progressing to the prototype stage. The KV-5 was expected to share some components with the KV-1. A new turret was designed, incorporating the 107-mm ZIS-6 gun. Early plans called for a new 1,200 hp diesel engine, but later adjustments, recognizing wartime disruptions, replaced this with two V-2K engines.