4th Cavalry Brigade (United States)

World War II • Headquarters and Headquarters Troop, 4th Cavalry Brigade • 9th Cavalry Regiment (Cld) • 10th Cavalry Regiment (Cld) • 28th Cavalry Regiment (Cld) Organization 2026 The 4th Cavalry Brigade is a Multi-Functional Training Brigade (MFTB) assigned to the 85th Support Command. Like all formations of the 85th Support Command, the brigade is not a combat formation, but instead trains Army Reserve and Army National Guard units preparing for deployment. As of January 2026, the brigade consists of a Headquarters and Headquarters Company, five active duty battalions, and five reserve battalions. • Headquarters and Headquarters Company, at Fort Knox (KY) • 3rd Battalion, 337th Regiment (Training Support), at Fort Knox (KY) • 1st Battalion, 409th Regiment (Brigade Engineer Battalion), at Fort Knox (KY) • 3rd Battalion, 409th Regiment (Brigade Support Battalion), at Joint Base Charleston (SC) • 4th Battalion, 409th Regiment (Brigade Support Battalion), at Fort Knox (KY) • 1st Battalion, 410th Regiment (Brigade Engineer Battalion), at Fort Knox (KY) • 4th Battalion, 410th Regiment (Brigade Support Battalion), at Fort Knox (KY) • 1st Battalion, 411th Regiment (Logistical Support), at Fort Knox (KY) The brigade's four training support battalions and logistical support battalion are Army Reserve formations. ==Lineage==

Constituted 25 August 1942 in the Army of the United States as Headquarters, 4th Tank Destroyer Group Activated 1 September 1942 at Camp Hood, Texas Inactivated 26 October 1945 at Fort Jackson, South Carolina Disbanded 5 August 1952 Reconstituted 24 October 1997 in the Regular Army as Headquarters, 4th Cavalry Brigade, and activated at Fort Knox, Kentucky Inactivated 16 October 1999 at Fort Knox, Kentucky Activated 1 December 2006 at Fort Knox, Kentucky ==Unit decorations==

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