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By the summer of 1941, the War Department work force in the Washington D.C. area numbered more than 24,000 civilian and military personnel which were housed in 17 buildings and was expected to reach 30,000 by the beginning of 1942. Providing office space for the workers was part of the military construction mission of the Quartermaster Corps’ Construction Division.


Completed in January 1943, the Pentagon consolidated the 17 buildings of the War Department under one roof. Today the Pentagon serves as the headquarters for the Department of Defense and, despite being only five stories tall, is one of the world’s largest office buildings in terms of floor space.


With more than 23,000 military and civilian employees, along with 3,000 non-defense support personnel, the Pentagon is a city within itself. Perhaps the most amazing feature of the building itself is its efficiency-based design. One can walk from one point in the building to any other point in less than seven minutes.


The Pentagon houses all six departments of the Department of Defense. These include the U.S. Army, Navy, Air Force, the Marine Corps, the Joint Chiefs of Staff and the office of the Secretary of Defense.



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