SD2:A-20Zh Zhuchok

 is a Soviet Air unit in Steel Division II.

Background
The Douglas A-20 is a United States three-man crew, twin-engined bomber of World War II. Its main role being a light bomber/attack aircraft, it was also used for intruder operations and for reconnaissance. The A-20 was developed and manufactured by the Douglas Aircraft Co. first as the Douglas DB-7, with multiple other variants made during its production years (1939-1944). Of the 7478(or 7385) aircraft produced 2908 were sent to the Soviet Union.

The A-20G, delivered from February 1943, would be the most produced of all the series, with 2850 built. The suffix G is pronounced Zh in Russian, thus leading to the nickname Zhuchok, meaning little bug. The glazed nose was replaced by a solid nose containing four 20 mm (.79 in) Hispano cannon and two 12.7 mm M2HB machine guns. In the Soviet Union the Hispano cannons were replaced by the 20 mm ShVAK cannon and the 12.7 mm machine guns were replaced by the 12.7 mm Berezin UB aircraft machine gun. After the first batch of 250, the less-accurate cannon was replaced by more machine guns. After 750 aircraft had been built, a power-driven gun turret fitted with two .50 in machine guns was fitted, with the fuselage 6 inches (15 cm) wider as a result, and the ventral tunnel gun changed from a .30 in to another .50 in Browning. These additional guns were also replaced by the Soviet Air Force.

Armaments
Berezin UB

The Berezin UB (УБ - Универсальный Березина, "Berezin's Universal") was a 12.7 mm caliber Soviet aircraft machine gun widely used during World War II. The UB is an improved design which came in three different variants: UBK (Крыльевой, Krylyevoi, for the wings), UBS (Синхронный, Sinkhronniy, Synchronized), and UBT(Турельный, Turelniy, for the turret).

20x99mmR ShVAK

The ShVAK (Shpitalnyi-Vladimirov Aviatsionnyi Krupnokalibernyi, “Shpitalny-Vladimirov large-caliber for aircraft”) was a 20 mm autocannon used by the Soviet Union during World War II. It entered production in 1936 as an aircraft mount, though one variant of it was made for light tanks (TNSh, Tankovyi Nudel’man-Shpitalnyi).