Force in combating the Central Powers. Before the division could deploy, though, World War I ended on 11 November 1918, Armistice Day. The 100th Division then began demobilizing as part of the post-war drawdown of the U.S. Army. It would remain on the U.S. Army's rolls until 26 July 1919, when the last units demobilized at Camp Zachary Taylor, Kentucky. Interwar period Only two years later, on 24 June 1921, the division was reconstituted in the Organized Reserve, allotted to the Fifth Corps Area, and assigned to the XV Corps. The states of West Virginia and Kentucky were allotted as the division's home area, with its headquarters organized in Wheeling, West Virginia, on 27 September 1921. On 29 May 1923, the division received its shoulder sleeve insignia. Most of the division's assigned Reserve officers were Reserve Officers' Training Corps graduates from West Virginia University, the University of Kentucky, or Western Kentucky State Teachers' College. As with most other Reserve divisions, the 100th saw little service in major maneuvers in the interwar period because of shortages of personnel and equipment, only conducting routine training and administering the Citizens' Military Training Camps in its home area. The headquarters location was changed in 1924 to Huntington, West Virginia and was changed again in 1937 to Charleston, West Virginia. World War II Mobilization On 23 February 1942, the 199th and 200th Infantry Brigade headquarters were disbanded, and the division was placed in command of the 397th, 398th, and 399th Infantry Regiments directly; the 400th Infantry Regiment was inactivated by relief of Reserve personnel. The 100th Infantry Division was ordered into active military service on 15 November 1942 at Fort Jackson, South Carolina. The enlisted and officer cadre came from the 76th Infantry Division. The commander of the 100th was Major General Withers A. Burress, one of only eleven generals who commanded their divisions from mobilization until the end of the war. From late 1943 to early 1944, the division trained in the mountains of Tennessee and was subsequently sent to Fort Bragg, North Carolina, for further training. While at Fort Bragg, Technical Sergeant Walter L. Bull earned the first Expert Infantryman's Badge. Order of battle Headquarters, 100th Infantry Division 397th Infantry Regiment 398th Infantry Regiment 399th Infantry Regiment Headquarters and Headquarters Battery, 100th Infantry Division Artillery 373rd Field Artillery Battalion (155 mm) 374th Field Artillery Battalion (105 mm) 375th Field Artillery Battalion (105 mm)