Government Agency

U.S. Department of Defense

Seal of the United States Department of Defense (link)


Washington, DC



Principal Officer:

Christopher C. Miller (Acting, through Jan. 20, 2021)

The Department of Defense is a Cabinet-level federal agency formed to consolidate the departments of the armed services after World War II. Its principal responsibility is the operation of the military services for national defense.

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U.S. Department of Defense

1400 Defense Pentagon
Washington, DC 22202