Headquarters Battalion, Joint Base Myer–Henderson Hall is the premiere Headquarters Battalion in the United States Army. It is also the Army’s largest battalion, with approximately 5500 Active Duty, United States Army Reserve, and Army National Guard Soldiers serving across the National Capital Region and at numerous locations around the world.
The battalion initially activated as a provisional headquarters on June 1, 1992, at Fort Myer, Virginia, with four companies and approximately 1,000 soldiers. In 1993, the battalion was designated a permanent unit and aligned under the Military District of Washington (MDW). As troops in the National Capital Region are aligned under the Senior Commander responsibility of the Commanding General, MDW; Headquarters Battalion functions as the subordinate command battalion for MDW. As a result, 65 agencies and offices in the National Capital Region—consisting of more than 300 units and subunits - are supported by Headquarters Battalion in accordance with Army Regulation 600-20 and the MDW 10-1.
Since 1993, the Battalion has continually transformed and grown into its present-day configuration. Today, the Battalion consists of two companies: Headquarters Company, United States Army is the second largest company in the United States Army and consists of approximately 2500 uniformed personnel in Headquarters Department of the Army Secretariat and the Army Staff. Headquarters & Headquarters Company, United States Army Garrison, Joint Base Myer – Henderson Hall is the largest company in the United States Army—and supports Joint Agencies and Activities, to include approximately 3,000 uniformed personnel in the Office of the Secretary of War, the Joint Staff, the White House, the State Department, the National Security Council, and a myriad of other agencies.
Headquarters Battalion is unique in that it has two distinct command channels-the Military District of Washington and the U.S. Army Installation Management Command. All battalion Soldiers assigned in official billets wear the Military District of Washington patch and uphold the motto of “Leadership and Service!