At the end of 1936, the Factory No 37 Ordzhonikidze in Moscow created full-speed armoured tracked tractor "Komsomoletz" T-20. The car had riveted-welded body, armour plates with a thickness of 7-10 mm, guarding crew. In addition, the commander operated a defensive weapon - 7,62 mm DT tank machine gun in a ball mount. The tractor was powered by a GAZ-M engine with 4-speed gearbox with interlock, complemented by a three-axle range GAZ-AAA, which doubled the number of stages in the transmission and allowed to have 2 ranges for traction and transport. The average speed on the highway reached 15-20 km/h, on a dirt road and off road up to 11.8 km/h, which was considered a very high rate. Turning radius is only 2.4 m - turn on the spot, was also assessed positively, given the high demands on the tractor manoeuvrability. However, the engine was not designed for the long hard work of the crawler tractors or tanks, overworked often failed prematurely - but other suitable - light and compact - engines did not exist. Komsomoletz played a huge role in the motorization of the Red Army. The composition of each infantry division was to include at least 60 trucks of this type. Tractor T-20 took part in the fighting against Japan at Lake Khasan in 1938, the river Halkin-Gol in 1939, in the Russo-Finnish War and the Great Patriotic War. A large number of tractors were captured by German troops in good condition. In the Wehrmacht they were under the designation Leicht Gepanzerter Artillerieschlepper 630. In the Finnish army, captured T-20's operated until 1961.