The Germans developed a number of different tanks in response to the Soviet Union's KV-1 and T-34, and the Soviets, in turn, responded to these German developments by creating the JS (Joseph Stalin)-1 Heavy Tank.
Design of the JS -1 commenced in 1941.
The Soviets wanted the JS-1 to be a four-man tank that didn't weigh much
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JS-1 Heavy Tank
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