Military rank List view Flt Lt Charles Gordon Olsen Military rank Airforce Date Sgt Sergeant RAF Royal Air Force 00.00.1941 Plt Off. Pilot Officer (on probation) RAF Royal Air Force 21.08.1942 F/O (prob.) Flying Officer (on probation) RAF Royal Air Force 21.02.1943 Flt Lt Flight Lieutenant RAF Royal Air Force 21.08.1944