"Lieutenant Colonel (later Colonel) Donald T. Kellet was commissioned an Officer upon graduation from Officer Candidate School in 1942. His first duty assignment was as Platoon Commander, Bn S-2, 16th Infantry, 1st Inf, Camp Blanding, Fort Benning, ETOUSA, MTOUSA. | His subsequent duty assignments include: Bn S-3, Instructor, 16th Inf/AF Headquarters, MTOUSA/Intelligence Training Center; Instructor, Commandant (US), AF Headquarters, MTOUSA/Intelligence Training Center; Commandant (US), Chief, AF Headquarters, MTOUSA/Intelligence Training Center/G-2 Div; Chief/Staff Officer, AF Headquarters/WDGS, MTOUSA/Intelligence Div, Washington Liaison Br; Staff Officer, WDGS, Int Div, Int Gp, Plans Sec; Staff Offi/Student, GAGS/CGSC(Fort Leavenworth, Kansas) Int Div, Int Gp, Plans Sec/Reg CSE, Opns Dept; Student Faculty, CGSC, Reg Cse, Opn Dept/Instructor;  Staff and Faculty, CGSC, Instructor/Ass G-3, Academic Dept;  Staff and Faculty CGSC, Asst G-3, Academic Dept/Chief, Operations Section; St & Fac/Operations Officer, CGSC/MAAG, Indochina; Chief, Operations Section/Saigon, Vietnam; Exec O/Bn Cmdr, MAAG, Indochina/69th Inf Div, Saigon, Vietnam/364th Inf Regiment, Fort Dix, New Jersey; Regiment Exec, Dep CS, 69th Inf Div, 364th Inf Regiment/Headquarters 69th Inf Div, Fort Dix, New Jersey; Deputy CS/Ch, Sp Opn Br, 69th Inf Div/OSA Fort Dix, New Jersey/Office, Chief of Legis Liaison; Chief, Spec Opn Br, Office Secy Army, Office, Chief of Legislative Liaison."