Colonel Hermann Ullrich was commissioned an Infantry Officer upon graduation from Officer Candidate School, 20 January 1951. His first duty assignment was as Platoon Leader, Company B, 325th Airborne Infantry Regiment, 82d Airborne Division. | His subsequent duty assignments include: Company Commander, Company G, 38th Infantry, 2d Infantry Division, Korea; Platoon Commander, Company C, 29th Regimental Combat Team, Okinawa; Company Commander, Company D, 75th Regimental Combat Team, Okinawa; G3, Special Projects Officer, United States Army Infantry Center, Fort Benning, Georgia, Instructor, Company Tactics Committee, United Army Infantry School, Fort Benning, Georgia; Company Commander, 414th Transportation Company, Aircraft Maintenance, Direct Support, Fort Benning, Georgia; Company Commander, 3335th Transportation Company, Aircraft Maintenance, Direct Support, Fort Benning, Georgia; Company Commander, 61st Aviation Company (Caribou), Republic of Vietnam; Assistant G3, 4th Infantry Division, Fort Lewis, Washington, Inspector General, United States Army Aviation Center, Fort Rucker; Alabama; Battalion Commander, 268th Combat Aviation Battalion, Republic of Vietnam; Chief, United States Army Training Center Human Research Unit, Presidio of Monterey, California; Executive Officer, United States Army Readiness Region, Fort Sam Houston, Texas; Department of Defense and Department of the Army Attache, United States Embassy, Kathmandu, Nepal.