Colonel David H. Hornstein was commissioned an Infantry Officer upon graduation from Officer Candidate School 19 April 1944, Class #322-44.  His first duty assignment was as Platoon Leader, 1st Battalion, 311th Infantry Regiment, 78th Division, European Theater. | His subsequent duty assignments include: Company Executive Officer, 1st Bn, 311th Inf Regiment, 78th Inf Div, European Theater; Company Executive Officer, Infantry Replacement Training Center, orFort McClellan, Alabama; Commander, Headquarters and Service Co Regiment S-4, 3d Inf Regiment, Fort Myer, Virginia; S-4, S-3, 2d Bn, 7th Inf Regiment, 3d Inf Div, Korea; ROTC Instructor, ROTC Detachment Penn State Univ; G-1 Action Officer, G1, Headquarters USARPAC, Fort Shafter, Hawaii; G-1 Action Officer, 25th Inf Div, Headquarters, USARHAW, Schofield Barracks, Hawaii; Battalion Commander, 4th Training Regiment, Fort Dix, New Jersey; Deputy IG, Headquarters, Fort Dix, New Jersey, Chief, Field Advisory Team, ARMISH-MAAG-Iran; Asst Exec Officer, Headquarters, U.S. Army Audit Agency, Washington, D.C.; Executive Officer, Headquarters, U.S. Army Audit Agency, Washington, D.C.; G-3 Action Officer, Headquarters Military Assistance Command, Vietnam; Ch Special Operations Plans Branch Saigon, Republic of Vietnam, Headquarters Military Assistance Command, Vietnam; Chief War Gaming Division, Institute of Land Combat, Alexandria, Virginia; Deputy Special Assistant, MAP-TOE, Comptroller of the Army Headquarters DA, Washington, D.C. | Colonel Hornstein's awards and decorations include: Purple Heart, Army Commendation Medal (2 Oak Leaf Cluster), Bronze Star ( 2 Oak Leaf Cluster).