Imperial War Museum Photo: NAM 16 (Part of the War Office Second World War Official Collection). A formation of Mark VB Supermarine Spitfires of R.A.F. 303 (Kościuszko) Squadron escorting General Bernard Montgomery's Boeing B-17 from Prestwick to Northolt on his return from North Africa on 17th May 1943. Supermarine Spitfire V BM144 RF-H is likely flown by Squadron Leader Zygmunt Bieńkowski. Photo taken by Major Geoffrey Keating - No. 2 Army Film & Photographic Section.