Panzer IV Ausf D
The Panzer IV was developed before the start of the war, as a 20 tonne chassis to carry a 75mm howitzer for close infantry support. It was the largest of the German tanks at the onset of war.
Soviet Zis 30 Tank Destroyer
In the desperate days of 1941, Komsomolets tractors were used as improvised tank destroyers, and around 100 were converted to carry a ZiS-2 57mm anti-tank gun as the short-lived ZiS-30.
