Lieutenant Colonel Lester R. Dillion, Jr. was commissioned an Infantry Officer upon graduation from Officer Candidate School on 8 December 1944, class number 372. His first duty assignment was as Platoon Leader, Company C, 155 Battalion, 92d Regiment, IRTC, Camp Hood, Texas. | His subsequent duty assignment include: Executive Officer, Headquarters Co, 2d Port, Manila, Philippine Islands; Company Commander, 608 Port Co, 3d Med Port, Inchon, Korea; S-4, 2d Bn, 31st Inf, 7th Div, Chunchon, Korea; Company Commander,. Co F, 31st Inf, 7th Div, Sapporo, Japan; Assistant PMS&T, 6513 ASU, Fort MacArthur, Los Angeles Public High School, Los Angeles, California; Adjutant, 17th Inf Regiment, 7th Inf Div, Korea; Special Services, 7th Inf Div, Korea; Adjutant, 1st Training, Gp, AARTC, Fort Bliss, Texas; Executive Officer, Special Troops, Headquarters, 4th Army, Fort Sam Houston, Texas; Assistant I.G., Headquarters, VII Corps, Stuttgart, Germany; Executive Officer, 2d Armd Rifle Bn, 41st Inf, 4th Armored Div, Ulm Germany; Instructor, USAIS, Fort Benning, Georgia; Committee Chairman, USAIS, Fort Benning, Georgia. | Lieutenant Colonel Dillion's awards and decorations include: the Korean Presidential Unit Citation, Combat Infantryman Badge, Bronze Star Meritorious.