Military rank List view Sgt Morten Johannes Tscherning Sivebak (Sivebæk) Military rank Airforce Date Pvt. Private USAAF United States Army Air Force 02.09.1942 Cpl Corporal USAAF United States Army Air Force 00.00.1943 Sgt Sergeant USAAF United States Army Air Force 00.00.1944