Colonel Erwin Jones was commissioned an Infantry Officer upon graduation from Officer Candidate School, 12 June 1942, class number 20. His first duty assignment was as Platoon Leader, Company G, 350th Infantry, 88th Division. | His subsequent duty assignments include:  Company Commander, 350th Inf , 88th Div; Battalion S-3, Battalion Executive Officer, 350th Inf, 88th Div; Army Recruiting, Recruiting, Illinois; Military Government during U.S. Army Occupation of Japan; Instructor, Armed Forces Information School; Battalion Commander, 1st Battalion, 21st Inf; Evacuation of refugees, MAAG, Vietnam; Battalion Commander, 28th Inf, 8th Div; ROTC Instructor, Ohio State University; Assoc CSG; G3 Training, VII Corps; Battle Group Dep Co, 34th Inf, 24th Div; Div Advisor, 100th Div Adv Gp.