Colonel Robert J. Trammell, Jr. was commissioned an Infantry Officer upon graduation from Officer Candidate School 6 December 1943. His first duty assignment was as Platoon Leader, Infantry Replacement Training Center, Camp Blanding, Florida. | His subsequent duty assignments include: Platoon Leader, Company M, 259th Infantry, 65th Division, Camp Shelby, Mississippi; Platoon Leader, Company D, 318th Infantry, 80th Division, European Theater of Operations; Platoon Leader, Company B, 54th Armored Infantry Battalion, 10th Armored Division, European Theater of Operations; Athletic Officer, Post, Camp and Station Complement, U.S. Army Reserve, Memphis, Tennessee; Student Detachment, 3059th U.S. Army Reserve School; Director, Command and General Staff College Department, 3291st U.S. Army Reserve School, Memphis, Tennessee; School Commandant, 3291st U.S. Army Reserve School, Memphis, Tennessee; and Commander, 290th Military Police Brigade, Nashville, Tennessee.