SU-12 (other designation: SU-1-12) is a Soviet self-propelled gun on a wheeled chassis of the interwar period and World War II. The first copies of this machine appeared in 1935. They probably served in the line until 1941. During serial production, approximately 250-300 machines of this type were produced. The car was equipped with one engine with a capacity of 50 horsepower. Armament consisted of one 76.2-mm regimental gun wz.27. The first attempts to create self-propelled guns on a wheeled chassis were made in the USSR back in 1932, when a 76.2-mm gun was installed on the chassis of an imported Moreland 6x4 truck, creating a SUM gun. However, the new weapon turned out to be too expensive due to the need to buy chassis from abroad. When the production of GAZ-AAA cars began in 1935, it was decided to use the chassis to assemble the cannon. Therefore, to create the SU-12, the aft part of the machine was strengthened, and a lightly armored superstructure was added. However, the vehicles had poor cross-country ability, terrible resistance to enemy fire, and limited fire efficiency. Despite these shortcomings, they were used in combat operations in the war with Japan (1938-1939), as well as during the aggression against Poland (1939) and in the winter war with Finland (1939-1940).
