Major Quitman L. Kirby, Jr. was commissioned an Infantry Officer upon graduation from Officer Candidate School Class 19-66, 5 December 1966. His first duty assignment was as Instructor, Map Reading Committee, Company Operations Department, U.S. Army Infantry School, Fort Benning, Georgia. | His subsequent duty assignments include: Instructor, Reliable Academy, 9th Infantry Division, Vietnam; Support Platoon Leader, 5th Battalion (Mechanized), 60th Infantry, 9th Infantry Division, Vietnam; Support Platoon Leader, 1st Battalion (Mechanized), 16th Infantry, 1st Infantry Division, Vietnam; Chief, Machine Gun Committee, 3rd Advanced Individual Training Brigade, Fort Jackson, South Carolina; Commander, Company E, 3rd Advanced Individual Training Brigade, Fort Jackson, South Carolina; Commander, Company C, 3rd  Battalion, 23rd Infantry Regiment, 2nd Infantry Division, Korea; Assistant Brigade Operations Officer, 2nd Brigade, 2nd Infantry Division, Fort Benning, Georgia; Manpower Control Officer, Headquarters, Training and Doctrine Command, Virginia. | At the time of his induction, Major Kirby was serving as Senior Management Analyst, Manpower, Equipment and Documentation Division, Directorate of Resource Management, Fort Benning, Georgia.