Lieutenant Colonel John W. Marr was commissioned an Infantry Officer upon graduation from Officer Candidate School on 3 September 1942, Class Number 63. His first duty assignment was as Mess Officer, Headquarters 507th Parachute Infantry, Fort Benning, Georgia. | His subsequent duty assignments include: Rifle Platoon Leader, Company G, 507th Prcht Infantry, Fort Benning, Georgia and Alliance Army Airfield Nebraska; Executive Officer, Company G, 507th Parachute Infantry, European Theater of Operations; Company Commander, Company B, 507th Prcht Infantry, European Theater of Operations; Executive Officer, 7th Bn, 2d Prcht Tng Regiment, Fort Benning, Georgia; Athletic Officer, Airborne Regiment The Infantry School, Fort Benning, Georgia; Company Commander, Company G, Abn Bn, STR, The Infantry School, Fort Benning, Georgia; Adjutant, Abn Bn STR, The Infantry School,  Fort Benning, Georgia; Advanced Infantry Officer Course Student, The Infantry School, Fort Benning, Georgia; Company Commander, Company A, 26th Infantry Regiment, Germany; Intelligence Officer, Headquarters 1st Bn, 26 Infantry Regiment, Germany; Opns and Tng Staff Officer, Headquarters Seventh Army, Germany; Instructor Tactics, Command and Staff Dept, The Armor School, Fort Knox, Kentucky; Student, Command and General Staff College, Fort Leavenworth, Kansas; Bn Commander and Executive Officer, 3d Bn, 21st Inf Regiment, Korea; Bn Commander, 2d Bn, 19th Inf Regiment, Korea; ACofS, G4, Headquarters 24th Infantry Division, Korea; Technical Board Member, Doctrines Committee AM Gp Abn-AM Dept, Fort Benning, Georgia; Executive Officer, Air Mobility Group Abn-AM Dept. | His awards and decorations include: the Silver Star w/ Oak Leaf Cluster, Bronze Star w/ Oak Leaf Cluster, Purple Heart, Combat Infantryman Badge, Presidential Unit Citation, British Military Cross and the French Croix de Guerre.