Colonel Dennis J. Harron was commissioned and Infantry Officer upon graduation from Officer Candidate School in 1954. | His duty assignments include: XO/Instructor General Subject Committee, Company F, 2d Infantry Training, Regiment, Fort Gordon, Georgia; Instructor Heavy Weapons Committee, Headquarters company, 42d Tank Battalion, 101st  Airborne Division, Fort  Jackson, South Carolina; Commander, Combat Support Flight, 3rd Avn Company, 3rd Infantry Division, Fort Benning, Georgia; Aide-de-Camp to Assistant Division commander, Headquarters, 3rd Infantry Division, Wurzburg,Germany; Commander, Fixed Wing Support Flight, 3rd Avn company, 3rd Infantry Division, Kitzengen, Germany; Commander, Combat Support, 1st Brigade, 38th Infantry, 2d Infantry Division, Fort Benning, Georgia; Operations Officer, B Troop, 17th Cavalry, 11th Air Assault Division, Fort Benning, Georgia; XO, 92d Avn Company, 14th Avn Battalion, U.S. Army Qui Nhon, Vietnam;  Commander, 1st Army Flt Det, Headquarters 1st U.S. Army, Fort Meade, Maryland; Commander, Headquarters, 5th Student Battalion (OCS), The Candidate Brigade, Fort Benning, Georgia; Personnel Management Member, U.S. Army  Physical Disability Review Council, Headquarters, DA, Washington, D.C.; Branch Chief, Combat Support Branch, Surface Operations Division, J-3, Headquarters, MACV, Saigon, Vietnam; Operations Staff Officer, SIGSEC Manager's Office, Headquarters, DA, Washington, D.C.; Assistant Deputy Exercise Director, REFORGER 74/75 and Chief, Exercise Division, Headquarters U.S. Army Europe, Heidelberg, Germany; Chief Concepts, Studies and Organization Division, Directorate of Combat Developments, U.S. Army Infantry School, Fort Benning, Georgia.