https://en.wikipedia.org/wiki/KV_tank_family
The Legacy of the KV in Modern Machines.Exactly 85 years ago, on 20.08.1941, the crew of Senior Lieutenant Zinoviy Kolobanov aboard the KV1 tank accomplished the impossible. One battle — 22 enemy tanks destroyed. Hundreds of hits that failed to penetrate the armor. That was when the legend of the "invincible ghost" was born, shaking the entire world.