Colonel Thomas Sobelick was commissioned an Artillery Officer upon graduation from Officer Candidate School 28 September 1951, class number 3. His first duty assignment was as Platoon Leader, Company H, 136th Infantry Regiment, 47th Infantry Division, Camp Rucker, Alabama. | His subsequent duty assignments include: Company Commander, Company M, 65th Infantry Regiment, 3d Infantry Division, Korea; Platoon Leader, 1400th Service Unit; Battery Commander, 2d Battalion, 21st Artillery, 25th Infantry Division, Schofield Barracks, Hawaii; B Battery Commander/S-2/S-3, 1st Battalion, 8th Artillery, 25th Infantry Division, Schofield Barracks, Hawaii; Instructor and Department Chief, U.S. Army Information School, Fort Slocum, New York; Advisor, Joint U.S. Military Advisory Group, Kohetheim, Thailand; Deputy Information Officer, U.S. Army Artillery and Guided Missile Center, Fort Sill, Oklahoma; Deputy Information Officer, Headquarters Supreme Allied Commander Atlantic, Norfolk, Virginia; Battalion Commander, Headquarters 3d Battalion, 13th Artillery, 25th Infantry Division, Cu Chi, Vietnam; S-3, 23d Artillery Group, Headquarters, Long Binh, Vietnam; Chief Recruiting Publicity Division, Deputy Chief of Staff ROTC, Headquarters Training and Doctrine Command, Fort Monroe Virginia; Senior Army Advisor, 83d ARCOM, Army Readiness Region VI, Columbus, Ohio.