As a result of Base Realignment and Closure (BRAC) throughout the Army, the ARRTC was moved to Fort Knox, Kentucky.

The 84th Training Command (LR) underwent a command-directed move to Fort Knox, Kentucky in advance of the ARRTC in September 2008.

It was initially made up of enlisted draftees from Indiana and Kentucky (who chose the formation's distinctive patch and nickname, an allusion to Abraham Lincoln who grew up in those two states), with a cadre of Regular Army, Officers Reserve Corps, and National Army officers.

The 84th Division headquarters arrived at the Port of Hoboken, New Jersey, aboard the USS Wilhelmina on 19 January 1919 after four months of overseas service and was demobilized on 26 July 1919 at Camp Zachary Taylor, Kentucky.

The headquarters was relocated in August 1922 to 24 East Michigan Street and moved again in 1928 to the Meridian Life Building.

For example, the headquarters occasionally trained with the staff of the 10th Infantry Brigade, 5th Division, at Fort Benjamin Harrison, Indiana.

[3] The 84th Infantry Division was ordered into active military service on 15 October 1942, at Camp Howze, Texas, about 60 miles north of Dallas.

The division entered combat on 18 November with an attack on Geilenkirchen, Germany, (Operation Clipper) as part of the larger offensive in the Roer Valley, north of Aachen.

[7] After a short rest, the division returned to the fight, taking Wurm and Würm (Geilenkirchen), Mullendorf, 18 December, before moving to Belgium to help stem the German winter offensive (Battle of the Bulge).

The division remained on occupation duty in Germany after VE-day, returning to the United States on 19 January 1946 for demobilization.

As such, the 84th is officially recognized as a "Liberating Unit" by both the U.S. Army's Center of Military History and the Holocaust Memorial Museum.

Throughout the 1950s, the division would continue its conversion to a training formation, changing its subordinate unit makeup from regiments to brigades and support groups.

On 24 January 1991, elements of the 84th Division (Training) were activated and mobilized for support roles in Operation Desert Storm.

The move expanded the 84th Division's area of command to include the rest of Wisconsin and Illinois, as well as all of Missouri and Iowa.

Soon after, in June 1994, units from the 84th participated in peacekeeping operations as part of the multinational observer force in the Sinai, Egypt, and remained there until July 1995.

All eight brigades realigned under the 100th Division and the Headquarters and Division Band combined with the Army Reserve Readiness Training Center (ARRTC) located at Fort McCoy, Wis., to create the 84th U.S. Army Reserve Readiness Training Command (84th USARRTC).

The expertise and resources from the two units gave the 84th USARRTC an edge on the type and amount of training opportunities offered.

In October 2006, the 84th USARRTC underwent another major transformation as 12 brigades from the Army Reserve's Institutional Training Divisions realigned under the command.

The brigades were responsible for Officer Education System (OES) training, such as the Combined Arms Exercise (CAX) and Intermediate Level Education (ILE), and Senior Reserve Officer Training Corps (SROTC) support to universities across the country.

In February 2007, the 84th USARRTC was renamed the 84th Training Command (Leader Readiness) in response to the unit's transformation under the Army Reserve's Decision Point 74.