This is the heavily armored Kv-1 heavy tank. This tank is most noted in the game World of Tanks for being the Soviet tier V heavy tank. It was in service from 1939-1942. the way to destroy it was to fire at point blank range, easier said than done. With 30mm to upwards of 75mm armor this was a true fortress. It had a 87mm cannon 5 crew and at 45 tons, 22 km/h was its top speed. The nazis feared this colossal heavy tank as it was not a good wake up call. The nazis nicknamed it the Iron horse .
Thanks to @Rio127 for shading and teaching me how to do layers.