Night fighter
In the following years, further Polish squadrons were created: 304 (bomber, then Coastal Command), 305 (bomber), 306 (fighter), 307 (night fighter), 308 (fighter), 309 (reconnaissance, then fighter), 315 (fighter), 316 (fighter), 317 (fighter), 318 (fighter-reconnaissance) and No. 663 (air observation/artillery spotting). The fighter squadrons initially flew Hurricanes, then Supermarine Spitfires, and eventually on P-51 Mustangs. Night fighters used by 307 were the Boulton-Paul Defiant, Bristol Beaufighter and finally the de Havilland Mosquito. The bomber squadrons were initially equipped with Fairey Battles and Vickers Wellingtons, then Avro Lancasters (300 Sqdn.), Handley Page Halifaxs and Consolidated B-24 Liberators (301 sqn) and de Havilland Mosquitos and B-25 Mitchells (305 Sqdn.). 663 Squadron flew Auster AOP IIIs and Vs. After the war, with the changed international situation, their equipment was returned to the British but only some of the pilots and crews returned to Poland.