#37mm
The Vickers Mk. E, also known as the Vickers 6-ton, was a tank developed in Britain during the Interwar period. Although it did not enter service in the UK, it was used by numerous countries, including Finland, Poland, and the USSR (where it became the T-26). In War Thunder, this tank can be found in the Finnish sub-tree. It is in many ways similar to the T-26, but it also has several differences, such as an extra crew member and a different gun.
The ZSU-37 (not to be confused with the ZSU-37-2) is a SPAAG built by the USSR that was based on the chassis of the SU-76M in late 1943–44 but never saw service due to its late introduction. The 37-millimeter gun can fire clips of either high-penetrating AP-T/HVAP-T anti-armor belts, or a very powerful HEFI-T* anti-aircraft belt. With this vehicle, the main issue is not downing planes in one shot but hitting planes in the first place.

