Colonel Clark W. Hastings was commissioned an Infantry Officer upon graduation from Officer Candidate School 19 December 1958, Class Number 1, 50th OC Company. His first duty assignment was as Platoon Commander, 2d Battle Group, 30th Infantry, Fort Sill. | His subsequent duty assignments include: Platoon Leader/Assistant S-3, 127th Signal Battalion, Korea; Instructor, Signal Officer Basic Course, Signal School, Fort Gordon; Signal Officer, USA Southern European Task Force, Italy; Brigade Signal Officer, 3d Brigade, 1st Cavalry Division (AM), Republic of Vietnam; Action Officer, Office of Personnel Opns, DA, Washington, D.C.; Chief, C-E Test Branch, Airborne Communications-Electronics Test Board, Fort Bragg; Operations Officer, Executive Officer, 35th Signal Brigade, Fort Bragg; Commander, 426 Signal Brigade, Fort Bragg; Executive Officer, 35th Signal Brigade, Fort Bragg; Chief, Profession of Arms Committee, Command and General Staff College, Fort Leavenworth; Chief of Staff, 7th Signal Command, Fort Ritchie. | Military schools attended include: Signal Officer Advance Course, Command and General Staff College, Air War College, Airborne School. | His awards and decorations include: Bronze Star Medal, MSM (2 Oak Leaf Cluster), Air Medal, ARCOM (3 Oak Leaf Cluster), Vietnam Campaign Medal (4), NDSM (2 Awards), Occupation Medal, Good Conduct Medal (3 awards), Expert Infantry Badge, Airborne Badge.