From early 1919 Poland was involved in the war with Soviet Russia and started to buy aircraft abroad, both from former Central Powers and allied countries. By mid 1920 there were created 15 scout and 4 fighter squadrons ("eskadra" in Polish, Nos. 1 to 19) and one bomber squadron (No. 21 destroyer squadron). They were actively used during Polish-Soviet war until a ceasefire in October 1920. Air combat was rare and most of Polish Air Force activity was reconnaissance, light bombing and strafing, especially against Budyonny's cavalry. In that period, the Polish Air Force consisted of a variety of British, French, German, Austrian and Italian aircraft of World War I era. A bulk were reconnaissance and light bomber aircraft; most numerous were: Breguet 14 (158 in total), LVG C.V (151), Bristol F.2 Fighter (106), AEG C.IV (91), SVA.10 (86), Rumpler C.I (84), DFW C.V (63), Salmson 2 (53). In lesser numbers there were used, among others, DH-9, Albatros aircraft (C.I C.VII, C.X, J.I), Hannover CL.II, Hansa-Brandenburg C.I, Halberstadt CL.II Main fighters used were: Fokker D.VII, SPAD VII, SPAD XIII, Oeffag D.III, Ansaldo Balilla, Albatros D.III, Sopwith Dolphin, Fokker E.V (D.VIII).