Military rank List view Flt Lt Poul Ulrik Axel Keel Military rank Airforce Date Sgt Sergeant RAF Royal Air Force 00.00.1941 Plt Off. Pilot Officer (on probation) RAF Royal Air Force 02.04.1941 Fg Off. Flying Officer RAF Royal Air Force 02.04.1942 Flt Lt Flight Lieutenant RAF Royal Air Force 02.04.1943