4th Cavalry Brigade (United States)

The 4th Cavalry Brigade is an AC/RC unit based at Fort Knox, Kentucky. The unit is responsible for training selected United States Army Reserve & National Guard units that are based East of the Mississippi River. The brigade was originally formed as an element of the 2nd Cavalry Division but was inactivated after the division was broken up. The unit was formerly designated as 4th Brigade, 85th Division. The brigade is a subordinate unit of the 1st Army.

World War II organization

 * 4cav-bde.gif Headquarters and Headquarters Troop, 4th Cavalry Brigade
 * 9 CAV DUI.png 9th Cavalry Regiment (Cld)
 * 10 CAV DUI.png 10th Cavalry Regiment (Cld)
 * 28 Cav Rgt DUI.jpg 28th Cavalry Regiment (Cld)

Current Organization
The unit is composed of:
 * 4cav-bde.gif Headquarters and Headquarters Troop, 4th Cavalry Brigade
 * 337th Infantry Regiment Distinctive Unit Insignia.jpg 3rd Battalion, 337th Regiment (Training Support Battalion)
 * 340 Inf Rgt DUI.jpg 2nd Battalion, 340th Regiment (Training Support Battalion)
 * 383rd_Regiment_Distinctive_Unit_Insignia.jpg 3rd Battalion, 383rd Regiment (Training Support Battalion
 * 409 Infantry Regiment COA.png 1st Battalion, 409th Regiment (Brigade Engineer Battalion)
 * 409 Infantry Regiment COA.png 3rd Battalion, 409th Regiment (Brigade Support Battalion)
 * 409 Infantry Regiment COA.png 4th Battalion, 409th Regiment (Brigade Support Battalion)
 * 410 Inf Rgt DUI.png 1st Battalion, 410th Regiment (Brigade Engineer Battalion)
 * 410 Inf Rgt DUI.png 2nd Battalion, 410th Regiment (Field Artillery)(Cannon)
 * 410 Inf Rgt DUI.png 4th Battalion, 410th Regiment (Brigade Support Battalion)
 * 411th Regiment Distinctive Unit Insignia.jpg 1st Battalion, 411th Regiment (Logistics Support Battalion)

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