Colonel Gregory Alan Smith was commissioned an Infantry Officer upon graduation from Officer Candidate School Class Number 5, 5 February 1968.  His first duty assignment was as Training Officer, 83rd Company (North Carolina OC), 8th Student Battalion, The Student Brigade, Fort Benning, Georgia. | His subsequent duty assignments include:  Executive Officer, 83rd Company (North Carolina OC), Fort Benning, Georgia;  Rifle Platoon Leader, B Co, 3/1, 23rd ID (Americal), Vietnam;  Recon Platoon Leader, E Co, 3/1, 23rd ID (Americal) Vietnam;  S3 (air) HHC 3/1, 23rd ID (Americal), Vietnam;  Company Commander, 1136th MP Co, MissouriARNG, Jefferson Barracks, Missouri;  S1, HQ, 204th MP Bn, MissouriARNG, Jefferson Barracks, Missouri;  S4 HQ, 204th MP Bn, MissouriARNG, Jefferson Barracks, Missouri;  S3, HQ, 175th MP Bn, MissouriARNG, Fulton, Missouri;  Bn XO, Hq, 175th MP Bn, MissouriARNG, Fulton, Missouri;  Bn Cdr, Hq, 175th MP Bn, MissouriARNG, Fulton, Missouri;  Bn Cdr, HQ, 204th MP Bn, MissouriARNG, Jefferson Barracks, Missouri;  Chief Evaluator, G3, Hq Starc, MissouriARNG, Jefferson City, Missouri;  Chief Training Officer, G3, Hq, Starc, MissouriARNG, Jefferson City, Missouri; and Commandant, Missouri Military Academy, Missouri Army National Guard, Centertown, Missouri.