Colonel William Giese was commissioned an Infantry Officer upon graduation from Officer Candidate School 6 September 1955, class number 56-3. His first duty assignment was as Platoon Leader, 15th Infantry, 3rd Infantry Division (FB). | His subsequent duty assignments include: 3rd Avn Co, 3rd Inf Div, Fort Benning, Georgia, and Kitzingen, Germany; Company XO and CO, 1st BG, 29th Inf, Fort Benning, Georgia; Aviation Staff Officer, Headquarters, Eighth U.S. Army; Chief, Operations Div, G-3, G-3 Section, Headquarters, U.S. Army Aviation Center, Fort Rucker; Armed Helicopter Plt Ldr, 11th Combat Avn Bn, 12 Avn Grp, 1st Avn Bde; S-1, 11th Avn Bn; Ch, Mobilization Designee, Reserve Component Personnel Ctr, OPO, Fort Ben Harris; Ch, Training & Standardization Br, Headquarters, 1st Aviation Bde; G-1, Eagle Combat Avn Bn (Prov), Qui Nhon, Vietnam; Ch, Enlisted Promotions, D.CSPER, DA, Pentagon; Ch, Curriculum, Tng Division, U.S. Army Infantry School, Fort Benning, Georgia; Chief, ICMD, U.S. Army Infantry Center, Fort Benning, Georgia.