The most large ally to Red Army on soviet-german front of the WW II was a Public Army Polish. Summer 1943 on request of the Alliance polish patriot Soviet government yielded consent on shaping Polish division. The Commander division became the former officer to armies Anders colonel Z.Berling.

http://polygonv.narod.ru/vp-lwp/4.htm

The soldiers Army Poland in fight with fascism.

Polish Air Force medium bomber PZL.37 Los (moose).
45 planes were used in Poland 1939 in fight against Nazi German forces.
All number of built:120. Max. speed 420 km/h (some planes with better engines 460 km/h).  Armament: 3 x 7.92 mm machine gun and up to 2,580 kg  of bombs .  Bomber was in show in Paris expo 1938. In 1939 before war , there were a purchase orders: 20 for Yugoslavia, 15 Bulgaria,  30 Romania, 20 for Turkey, Belgium bought licence. Start of war cancelled the orders.
Photo: Hugo Jaeger, Warsaw 1939, unfinished plane.

Polish Air Force

1944. The Soldiers Poland in composition of the regular Red Army. The Liberation of the Poland from Hitler invaders.