At the beginning of the Great Patriotic War, the KV-1 heavy tank was the most powerful and most advanced design vehicle in the world. Strong weapons and thick armor helped it emerge victorious in clashes with German tanks, for which the meeting with the KV-1 was an unpleasant surprise. It is difficult to overestimate the contribution that our heavy tanks made to the victory, taking on the enemy’s blow during the most difficult time for our country. first year of the war. The design of the “kavashka” served as the basis for the design and creation of IS tanks, which, taking over the baton from the KV-1, triumphantly entered Berlin.