Colonel Richardson O. Stewart was commissioned an Military Intelligence Officer upon graduation from Officer Candidate School 2 May 1944, class 323-A. His first duty assignment was as Training Officer, Range Officer, Headquarters Military Intelligence Training Cen, Camp Ritchie, Maryland. | His subsequent duty assignments include: Photo Interpreter, European Theater of Operations, PI Team 119, Headquarters Vi Corps, XV Corps, Photo Interpreter Team, 119, 14th Armored Division; Tactical Officer, OCS and Pre West, 3rd STR, TSB, Fort Benning, Georgia; I&R Platoon Leader, Mortar Platoon Leader, Rifle Platoon Leader, 3rd Infantry Regiment, Headquarters Company, Company M, 16th Infantry Regiment and Company I; Rifle Platoon Leader, 16th Infantry, Company I, Berlin; Photo Interpreter, PI Team 501, Fort Sill, Oklahoma; Intel Staff Officer/Strategic Intel School/Intel Staff Officer/, OACofs, G-2 Department Army, Washington, D.C.;  Intel Branch Chief, OACofs, G-2 AFFE/8th Army, Department of Army, Tokyo; Intel Branch Chief, OACofs, G-2 AFFE/8th Army, Aama, Japan; USA Reserve Advisor and Area Commander, XX Corps, USAR Adv Group, Springfield. Ohio; Assistant Army Attache, OACSI, Duty Station, Seoul, Korea; Executive Officer and Deputy BG Commander, 1st BG, 87th Infantry, 2d Division, Fort Bennning, Georgia; OACS, G-2, Headquarters, 2d Infantry Division, Fort Benning, Georgia; Intel Adv, I Corps, USMACV Adv Group; Da Nang, Vietnam; Chief USSR/Europe Branch, Special Research Detachment, OACSI, DA, Fort Meade, Maryland; Chief, Scientific-Tech Division, OACSI, DA, Pentagon, Washington, D.C.; Deputy Director of Intelligence, Pentagon; Deputy Director of Intel, OACSI, DA, Pentagon.