100th Division (Institutional Training) Unit Rings

100th Division (Institutional Training) Century Division

“Success in Battle”
“Soldiers of the Century”
“Train ‘em Tough!”

Shoulder Sleeve Insignia

Upon a blue shield approximately 2 1/2 inches (6.35cm) in height the number “100″ in round block letters, the upper half of the numerals white, the lower half yellow.

Originally approved on 29 May 1923. It was redesignated for the 100th Airborne Division on 12 Dec 1946.On 29 Jan 1947 the airborne tab was rescinded. The insignia was amended to add the airborne tab on 13 Jun 1951. The shoulder sleeve insignia was reassigned for the 100th Infantry Division and constituted to delete the airborne tab on 9 Aug 1956. Effective 7 Sep 1960 the insignia was redesignated for the 100th Division.

Distinctive Insignia

The 100th Infantry Division now known as 100th Division (Operational Support) is a Total Army Schools System (TASS) Training Division of the U.S. Army headquartered in Louisville, Kentucky. It serves as a major training command of the US Army Reserves.

The 100th Division was activated in July 1918 at Camp Bowie Texas. The Division saw little service in the National Army and was deactivated on Armistice Day, 11 November 1918 and was demobilized a year later. In July 1921, the Division was reestablished with the headquarters at Wheeling West Virginia.

The Division was again activated on 15 November 1942 at Fort Jackson, South Carolina. The division embarked to Europe on 6 October of that year and arrived at Marseille, France on 20 October.  It was made part of VI Corps of the Seventh United States Army, Sixth United States Army Group. In December 1944, the division went on the offensive in France spending 163 days in combat and returned to the U.S. on 10 January 1946.

The Division took part in the Cold War as it was reactivated in the US Army Reserve as the 100th Airborne Division in Louisville, Kentucky in 1946. Being one of the few airborne divisions within the U.S. Army was short; in 1952 the division was reorganized as the 100th Infantry Division. Then in 1955 became 100th Division (Replacement Training). It was again organized in 1959 to its present designation as 100th Division (Institutional Training). The Division received its mission to teach basic, advanced, and common training skills to soldiers from the Army’s active, reserve, and National Guard components.  In 1961, elements of the Division, some 1,500 soldiers were mobilized to Fort Chaffee, Arkansas, to provide support during the Berlin Crisis.

During Operation Desert Storm in 1991, the 100th was designated to armor training at Fort Knox, Kentucky which was a responsibility that the division continued after the war. In 1995 the Division was reorganized to add Army Reserve Schools, with further responsibilities for new programs. In 1996 the
100th Division’s 1st Brigade worked with Readiness Group Knox to lead the national training experiment to reserve combat units at crew and platoon levels. Before the end of that year, the Division included three divisional brigades; the 5th Brigade, 100th Division in Memphis, Tennessee for health services training, the 6th Brigade, 100th Division in Louisville, Kentucky for professional development training, and the 7th Brigade, 100th Division at Fort Knox, formed from the 100th Training Command and responsible for training exercises.

In the break of September 11, 2001 attacks, the Division began preparing Army National Guard elements from Ohio and Kentucky preparation for deployment in support of the War on Terrorism.

In 2011, the 100th Division will move its headquarters to Fort Knox from Louisville, KY, to smooth strains in administration and training under recommendations from Base Relocation and Closing commission.