3d bt 5 soviet russian tank model - BT 5 SOVIET RUSSIAN TANK WWII by De Espona

The Fast Tank (Russian: ???????????? ????, Bystrokhodny tank), was a series of Soviet 'cruiser tanks' which were produced in large numbers between 1932 and 1941. They were lightly armoured, but reasonably well-armed for their time, and had much better mobility than other contemporary tank designs. The BT tanks were known by the nickname Betka from the acronym, or by the diminutive version Beteshka.