This is a reprint of the extremely scarce study, originally prepared by the Polish Air Force assoc in London in 1949. as the official English language history of Polish flyers in WW 2. Based on combat reports, squadron diaries and official records, with personal narratives by former aircrew, it is the definitive account of the 14 squadrons that flew with the RAF in the war ten fighter squadrons, # 300 to 309 and four bomber # 315 to 318.