Colonel Patrick J. Niemann was commissioned a Military Intelligence Officer upon graduation from Officer Candidate School 28 June 1966. His first duty assignment was as Advisor, Recondo Company, 5th Infantry Division, Army of the Republic of Vietnam. | His subsequent duty assignments include: Special Agent, 115th Military Intelligence Group, Presidio of San Francisco, California; Investigative Control Officer, 115th Military Intelligence Group, Presidio of San Francisco, California; Air Mission Commander, Special Operations Support Unit, Military Assistance Command Vietnam, Republic of Vietnam; Special Agent in Charge, Fort Hood Regional Office, 525th Military Intelligence Group, Fort Hood, Texas; Commander, San Antonio Field Office, 525th Military Intelligence Group, Fort Hood, Texas; Brigade S-2, 1st Brigade, 2d Armored Division, Fort Hood, Texas; Intelligence Staff Officer, U.S. European Command, Airborne Command Post, Mildenhall, England; Executive Officer, 319th Military Intelligence (Airborne), 525th Military Intelligence Brigade (Airborne), Fort Bragg, North Carolina; Deputy G-2, Headquarters, XVIII Airborne Corps, Fort Bragg, North Carolina; Commander, 519th Military Intelligence Group (Airborne), 525th Military Intelligence Brigade (Airborne), Fort Bragg, North Carolina; Intelligence Staff Officer, Deputy Chief of Staff Intelligence, Department of the Army, Washington, D.C.; Chief, Intelligence Division, J-2, United States Central Command, MacDill Air Force Base, Florida; Chief, Current Operations Division, J-3, United States Central Command, MacDill Air Force Base, Florida; Director, Office for Security and Counterintelligence, Defense Intelligence Agency, Washington, D.C.