Colonel Horst K. Joost was commissioned an Infantry Officer upon graduation from Officer Candidate School 6 January 1943, class number 144. His first duty assignment was as Infantry Platoon Leader, OCS - IRTC, Camp Roberts, California. | His subsequent duty assignments include: Photo Interpreter, Headquarters, First Army & V Corps Arty, European Theater; Photo Interpreter, Headquarters, First Army, Fort Jackson, South Carolina; German Documents Section Exploitation, Intelligence Div, War Dept Gs, Washington, D.C.; Competitive Tour, Company Commander, 39th Inf Regiment, 9th Division, Fort Dix, New Jersey; Btry Commander and Battalion Executive officer, 39th Inf Regiment, 9th Div, Fort Dix, New Jersey; Company Commander and Brigade S-1, 508th Airborne Brigade, Fort Benning, Georgia; Intelligence Assignment, Spt Gp 8706 AAU, Washington, D.C. and Western Europe; The Infantry School Tech Board Member, Airborne-Airmobility, Department, Fort Benning, Georgia; The Infantry School Chairman, Doctrine Committee, Airborne-Airmobility Dept, Fort Benning, Georgia; Deputy Army Aviation Officer, Headquarters, Eighth U.S. Army, Korea; Aviation Staff Officer, Headquarters, USCONARC, Fort Monroe, Virginia; Chief, Org, Plans & Doctrine Div, Avn Section, Headquarters, USCONARC, Fort Monroe, Virginia; Tac Mob Req Bd (HOWZE Board), Headquarters, USCONARC, Fort Bragg, North Carolina; Staff Officer, Special Warfare Div, Headquarters, USCONARC, Fort Monroe, Virginia; War Games & Studies, Headquarters, STRICOM, JTETF, Fort MacDill, Florida; Brigade Executive Officer, 173 Airborne Bde, Vietnam; Battalion Commander, 145th Aviation Battalion, Vietnam; Deputy Commander, USACDC Aviation Agency, Fort Rucker, Alabama. | Colonel Joost's awards and decorations include: Vietnamese Cross of Gallantry (two awards); Army Commendation Medal, Eleven Award of the Air Medal; BS Meritorious Service; Bronze Star Valor, Legion of Merit.