Colonel Harry H. Jackson was commissioned an Infantry Officer upon graduation from Officer Candidate School, 30 November 1943. His first duty assignment was as Rifle Platoon Leader, 318th Infantry Regiment, 80th Infantry Division. | His subsequent duty assignments include:  Rifle Platoon Leader and Executive Officer, 350th Infantry Regiment, 88th Infantry Division, Italy; Company Commander, XXIV Corps Special Troops, Korea; Economics Officer, I Corps, Military Government Region, Japan; G-2, Order of Battle Specialist, 25th Infantry Division, Japan; Army Instructor, Michigan National Guard; Regimental S-2, S-3, & S-4, 23d Infantry Regiment, 2d Infantry Division, Korea; Instructor and Committee Chief, U.S. Army Special Warfare School, Fort Bragg, North Carolina; Commander, 77th Special Forces Group, Fort Bragg, North Carolina; G-3 Maneuvers, Headquarters, Fort Richardson, Alaska; Plans and Operations Officer, Office of the Assistant Secretary of  Defense for Special Operations, Pentagon; US Operations Mission Representative, Department of State Agency for International Development, IV Corps, Vietnam; PROVN Study Group, ODCSOPS; Director, US Operations Mission Region, Department of State Agency for International Development; Commander, 95th Civil Affairs Group, Fort Gordon, Georgia; Director of Instruction, U.S. Army Special Warfare School, and Director Military Advisor School, U.S. Army Institute for Military Assistance, Fort Bragg, North Carolina. | His awards and decorations include: Silver Star (1 Oak Leaf Cluster), Legion of Merit, Bronze Star w/ V Device and 2 Oak Leaf Clusters, Purple Heart (1 Oak Leaf Cluster), French Croix Guerre (Bronze Star), Combat Infantryman Badge (with Star).