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On 1 June 2006 the 1st Brigade Combat Team and its subordinate units were inactivated and their personnel and equipment transferred to the 2nd Cavalry Regiment (Stryker). The brigade returned to Fort Lewis in September 2005. For its conduct of combat operations in Iraq the 1st Brigade and its subordinate units received a Valorous Unit Award and campaign participation credit for the Iraqi Governance campaign. The 1st Brigade distinguished itself in the conduct of extensive combat operations against insurgent forces as well as in stability initiatives in and around the city of Mosul. It achieved combat-ready status in mid-2004 and began a one-year tour of duty in Iraq in September 2004. In early 2002 the 1st Brigade began its conversion from a light infantry brigade to a Stryker brigade.
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The 1st Brigade was stationed at Schofield Barracks from 1971 until reassigned to Fort Lewis Washington in 1995.
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The 1st Brigade departed Vietnam on 8 December 1970. The battalions serving with the 1st Brigade were the 4/9th Infantry, 2/14th Infantry (until Feb. Arriving in Vietnam on 29 April 1966, the 1st Brigade was based initially at Cu Chi and participated in all twelve campaigns of the 25th Division receiving a Valorous Unit Award for Tay Ninh Province. Re-designated as Headquarters and Headquarters Company, 1st Brigade, 25th Infantry Division and activated 26 August 1963 at Schofield Barracks. Concurrently reconstituted (less 3rd Platoon) in the Regular Army as Headquarters and Headquarters Company, 167th Infantry Brigade. 84th Reconnaissance Company disbanded in 1959. The 84th Reconnaissance Troop was inactivated in 1946 and reactivated in 1947 as the 84th Reconnaissance Platoon (later Company). Driving into Germany and meeting strong German resistance the 84th crossed the Roer and Rhine Rivers advancing to the Elbe River and linking up with Soviet forces on. In response to the German counterattack in the Ardennes the 84th was shifted to Belgium to help stop the German advance. The 84th Infantry Division entered combat in Holland in November 1944. Converted and re-designated in 1942 as the 84th Reconnaissance Troop (less 3rd Platoon), 84th Division. Constituted and organized in 1917 as Headquarters, 167th Infantry Brigade, 84th Division.
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