It's not uncommon for civilians to see an armored fighting vehicle (AFV) with caterpillar tread and a large cannon and call it a tank. Those are the basic features that make up a main battle tank, ...
During World War II, the Soviet Union fielded 57-millimeter anti-tank guns towed on wheels or mounted on armored chassis. After the war, the Soviets built the ZSU-57-2, a self-propelled anti-aircraft ...