The ‘KV-1’ was a heavy tank that was produced by the Soviet Union during World War 2. The KV-1 was a very effective tank, and it was considered to be one of the best tanks of the war. It was equipped with a powerful diesel engine, and it had a good range and a good speed. The KV-1 was also very well-armored, and it was able to withstand direct hits from most enemy anti-tank weapons. The KV-1 was used extensively on the Eastern Front, where it played a key role in the Soviet victory.