Special Troops Battalion, 3rd Brigade Combat Team
"Valiant Warriors"

The 3rd Brigade Special Troops Battalion was first constituted on 24 May 1917 in the Regular Army as Headquarters Troop, 1st Expeditionary Division and organized on 8 June 1917 at New York, New York. The unit was reorganized and redesignated on 6 July 1917 as Headquarters Troop, 1st Division.

It was reorganized and redesignated on 13 February 1921 as Headquarters and Military Police Company (less one Military Police Platoon), 1st Division and again on 1 August 1942 as Headquarters Company, 1st Infantry Division. The unit was disbanded on 20 April 1960 at Fort Riley, Kansas.

The unit was reconstituted on 23 October 1963 in the Regular Army as Headquarters and Headquarters Company, 3d Brigade, 1st Infantry Division and activated 2 January 1964 at Fort Riley, Kansas. It was redesignated on 21 July 1975 as Headquarters and Headquarters Company, 1st Infantry Division (Forward). It was inactivated on 15 August 1991 in Germany.

The unit was redesignated on 16 February 1996 as Headquarters and Headquarters Company, 3rd Brigade, 1st Infantry Division, and activated in Germany.

Headquarters Company, 3rd Brigade, 1st Infantry Division was reorganized and redesignated on 16 April 2007 as Special Troops Battalion, 3rd Brigade Combat Team, 1st Infantry Division. Headquarters, 3rd Brigade, 1st Infantry Division thereafter had a separate lineage.

In June 2008, elements of the 3rd Brigade Combat Team, 1st Infantry Division (Mechanized), including the 3rd Brigade Special Troops Battalion, deployed in support of Operation Enduring Freedom - Afghanistan. They remained deployed into 2009.