Major General Delmer H. Nichols was commissioned upon graduation from Officer Candidate School Class 3-45, 30 April 1945. His first duty assignment was with a Cannon Company, 318th Infantry, 80th Infantry Division, European Theater of Operations (Germany). | His subsequent duty assignments in the U.S. Army Reserve include: Company Commander and Battalion Motor Officer, Headquarters and Headquarters Company (HHC), 3d Battalion, 143d Infantry, 36th Infantry Division, Texas Army National Guard (TexARNG), Waco, Texas; Troop Commander, Headquarters and Headquarters Troop, 3d Squadron, 112th Cavalry, TexARNG, Weslaco, Texas; Battery Commander, Battery B, 649th AAA AW Battalion, 49th Armored Division, TexARNG, Talyor, Texas; Company Commander, Company B, 3d Battalion, 112th Armor, 49th Armored Division, TexARNG, Taylor, Texas; S3 Air, HHC, 3d Battalion, 112th Armor, 49th Armored Division, TexARNG, Fort Polk, Louisiana; Executive Officer, S3, and Battalion Commander, 3d Battalion, 112th Armor, 49th Armored Division, TexARNG, Temple, Texas; Training Officer, State Headquarters and Headquarters Detachment, TexARNG, Austin, Texas; Deputy Brigade Commander, HHC, 72d Infantry Brigade, TexARNG, Dallas, Texas