Military District of Washington

• Origins during the Civil War: The Military District of Washington (MDW) was established during the American Civil War in 1862 to coordinate the defense of the U.S. capital, Washington, D.C., at a time when it was at risk of Confederate attack. • Guardians of the Capital: MDW is responsible for the security and defense of the nation’s capital, including critical government buildings and monuments such as the White House, the Pentagon, and the Capitol. • Arlington National Cemetery: The MDW oversees Arlington National Cemetery, the nation’s most hallowed military burial ground, and is responsible for conducting thousands of funerals there each year, including those of presidents and Medal of Honor recipients. • Presidential Support: MDW units provide ceremonial support for presidential inaugurations, state funerals, and official visits by foreign dignitaries, playing a visible role in national events. • The Old Guard: The 3rd U.S. Infantry Regiment, known as "The Old Guard," is part of MDW. It is the oldest active-duty infantry unit in the Army (since 1784) and performs ceremonial duties, including the Changing of the Guard at the Tomb of the Unknown Soldier. • Pentagon Protection: MDW worked closely in the aftermath of 9/11, coordinating emergency response and security at the Pentagon, a key installation under its jurisdiction. • Military Justice History: During the Lincoln assassination conspiracy trial in 1865, MDW played a key role in providing security and overseeing the imprisonment and execution of conspirators at the Washington Arsenal. • Joint Service Participation: MDW includes units from the Army, Navy, Air Force, and Marines, reflecting its joint-service nature in supporting national defense and ceremonial functions. • Major Parades and Events: MDW organizes and participates in major parades and events in Washington, D.C., including Memorial Day and Independence Day celebrations, and the National Memorial Day Parade. • Unique Command Structure: Unlike most military districts, MDW reports directly to the Department of the Army and coordinates closely with federal, state, and local authorities, highlighting its unique mission and importance in the nation’s capital.