The Soviet T-34 was one of the finest tanks of the Second World War and
the mainstay of Soviet armoured units throughout the war. Most nations
underestimated the scale and quality of Soviet tank production before
the Second World War and the Germans were no exception. They were
certainly not prepared for the T-34, which they encountered during
Operation Barbarossa (the German invasion of Russia) in 1941. Its
combination of firepower, mobility, protection, and ruggedness led
German Panzer General Paul von Kleist at the time to call it "The finest
tank in the world." Another legendary Panzer tactician and general,
Heinz Guderian, also confirmed the T-34's "vast superiority" over
existing German armour of the period.