Soviet T26 Ealy winter war light tanks The biggest production run of the T-26 was the single-turret variant. In fact, it was inspired by the British Vickers 6-tons Type B, but both the turret and armament were purely Soviet in design. The turret was cylindrical, relatively low, simple in design, with rear storage, housing a high velocity 45 mm (1.77 in) gun with antitank capabilities. This was in stark contrast to the British Type B’s low velocity 37 mm (1.46 in) gun, designed for infantry support.
The Soviet gun, the 19K model 1932, was supplied with 122 rounds. Secondary armament consisted of a frontal coaxial 7.62 mm (0.3 in) DT machine gun and an additional one mounted on a rear external anti-aircraft cradle. In 1935, an extra one was mounted in a turret rear ball mount, all supplied by a total of 2961 rounds.
These three machine-guns were provided to cope with dedicated anti-tank crews and effectively did their job against Japanese suicide squads at the battle of Khalkin Gol in 1939 (Mongolia). The 19K (and later 20K) 45 mm (1.77 in) guns fired anti-tank rounds with a muzzle velocity of 820 m/s (2,700 ft/s), but a supply of traditional high explosive rounds were also carried.
By 1933, only commander tanks were equipped with radios, the early model presenting the cumbersome hand-rail radio antenna on the turret, while later ones had the more conventional buggy-whip antenna. This later type was a product of the experience both during the Spanish Civil War and various incidents with Japan on the Chinese-Mongolian border, showing that visible commander tanks were more likely to be targeted.