Brigadier General Thomas J. Konitzer was commissioned an Ordnance Officer upon graduation from Officer Candidate School Class 2-67, 20 April 1967. His first duty assignment was as Executive Officer, 9th Training Company, 2nd Battalion, School Brigade, Aberdeen Proving Ground Maryland. | His subsequent duty assignments include: Rotary Wing Aviator, 283d Aviation Company, 20th Aviation Battalion, 4th Infantry Division, Fort Carson, Colorado; Platoon Commander later Operations Officer, Battery B, 2d Battalion, 20th Artillery, 1st Cavalry Division, United States Army, Republic of Vietnam; Assistant S-3 (Operations), 2d Battalion, 20th  Artillery Brigade, 1st Cavalry Division, United States Army, Vietnam; Executive Officer, Company A, 1st Battalion, School Brigade, United States Armor School, Fort Knox, Kentucky; Commander, Headquarters Troop, Reserve Officers Training Corps Coordination Committee, 3d Armored Cavalry Regiment, Fort Lewis, Washington; Commander, K Troop, 3d Squadron, 3d Armored Cavalry Regiment, Fort Lewis, Washington; S-4 (Logistics), 3d Squadron, 3d Armored Cavalry Regiment, Fort Bliss, Texas; Commander, Regimental Combined Arms Training Troop, 3d Armored Cavalry Regiment, Fort Bliss, Texas; Military Observer, United Nations Truce Supervisor, Palestine, Israel; Assistant Operations Officer, Israel-Syria Mixed Armistice Committee, Damascus, Syria; Commander, Air Cavalry Troop, 3d Armored Cavalry Regiment, Fort Bliss, Texas; Protocol Officer, Office of the Chief of Staff, Army, Washington, D.C.; Commander, 3d Squadron, 2d Armored Cavalry Regiment, United States Army, Europe, Germany; Secretary of the General Staff, Headquarters, V Corps, United States Army Europe and Seventh Army, Germany; Deputy Assistant Chief of Staff for Operations and Force Development, Office of the Deputy Chief of Staff for Operations and Plans, Washington, D.C.; Commander, 6th Cavalry Brigade, III Corps, Fort Hood, Texas; Deputy Commander/Assistant Commandant, United States Army Aviation School, United States Army Aviation Center, Fort Rucker, Alabama; Assistant Division Commander (Support), and Assistant Division Commander (Operations), 101st Airborne Division ( Air Assault), Fort Campbell, Kentucky; Commanding General, First Reserve Officer Training Corps Region, Fort Bragg, North Carolina; Commanding General, United States Army Safety Center/Director of Army Safety, Fort Rucker, Alabama.