Colonel David C. Russell (Ret.) was commissioned an Infantry Officer upon graduation from Officer Candidate School Class AOC 4, 20 May 1947. His first duty assignment was as Platoon Leader, Troop D, 83rd Mechanized Cavalry Reconnaissance Squadron, Combat Command A, 3rd Armored Division, Fort Knox, Kentucky. | His subsequent assignments include: S-3 (Operations and Training Staff Officer), 83rd Mechanized Cavalry Reconnaissance Squadron, Combat Command A, 3rd Armored Division, Fort Knox, Kentucky; Platoon Leader, Company B, 34th Infantry, 24th Infantry Division, Korea; Platoon Leader, Company K, 19th Infantry, 24th Infantry Division, Korea; Platoon Leader, Company E, 19th Infantry, 24th Infantry Division, Korea; Company Executive Officer, 19th Infantry, 24th Infantry Division, Korea; Company Commander, Headquarters, Camp Gordon, Georgia; Aide-de-Camp, Camp Gordon, Georgia; Assistant G-1 (Personnel Staff Officer), Camp Gordon, Georgia; Student, Infantry Officers advance Class, Fort Benning, Georgia; Student, Basic Airborne and Jumpmaster Class, Fort Benning, Georgia; Assistant G-1, Headquarters, Communications Zone, Europe, Orleans, France; Company Commander, First U.S. Army Non Commissioned Officers Academy, Fort Dix, New Jersey; Regimental S-3, First U.S. Army Non-Commissioned Officers Academy, Fort Dix, New Jersey; Commandant, First U.S. Army Non-Commissioned Officers Academy, Fort Dix, New Jersey; Chief, Plans and Operations Branch, G-3, Headquarters, Northern Area Command, Frankfurt, Germany; Student, Army Command and Staff College, Fort Leavenworth, Kansas; Student, Tulane University Graduate School, New Orleans, Louisiana; Chief, Plans Branch, Surface Plans and Operations Division, Office of the Assistant Chief of Staff for Operations, J-3, Headquarters, United States Military Assistance Command, Vietnam (MACV), Saigon, Vietnam; Deputy Chief, Surface Operations Division, Office of the Assistant Chief of Staff for Operations, J-3, Headquarters, United States Military Assistance Command, Vietnam (MACV), Saigon, Vietnam; Program Manager, Nuclear Monitoring Research Office, Defense Advanced Research Projects Agency (DARPA), Arlington, Virginia; Deputy Director, Information Processing Techniques Office, DARPA, Arlington, Virginia; Director, Information Processing Techniques Office, DARPA, Arlington, Virginia.