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  1. U.S. Department of Defense

    The Department of Defense is America's largest government agency. Our mission is to provide the military forces needed to deter war and ensure our nation's security.

  2. United States Department of Defense - Wikipedia

    The United States Department of Defense (DoD, [2] USDOD, or DOD) is an executive department of the U.S. federal government charged with coordinating and supervising the six U.S. armed services: the Army, Navy, Marines, Air Force, Space Force, the Coast Guard for some purposes, and related functions and agencies.

  3. U.S. Department of Defense - Encyclopedia Britannica

    3 days ago · U.S. Department of Defense (DoD), executive division of the U.S. federal government responsible for ensuring national security and supervising U.S. military forces. Based in the Pentagon, it includes the Joint Chiefs of Staff, the departments of the U.S. Army, U.S. Navy, and U.S. Air Force, and

  4. What does the Department of Defense do? | USAFacts

    Jan 23, 2025 · The Department of Defense (DOD) is cabinet-level executive branch agency tasked with maintaining and overseeing the military forces of the United States. Its primary functions include overseeing the Army, Navy, Air Force, Marine Corps, and Space Force; creating military policies; and managing the defense budget .

  5. U.S. Department of Defense (DOD) - USAGov

    The Department of Defense (DOD) provides the military forces needed to deter war, and to protect the security of the United States.

  6. What the Department of Defense Does | GovFacts

    The United States Department of Defense (DoD) is the federal executive department charged with safeguarding national security. The DoD’s official mission is “to provide the military forces needed to deter war and ensure our nation’s security.”

  7. Department of Defense - United States Government Manual

    The Department of Defense provides the military forces needed to deter war and protect national security.

  8. Organizational structure of the United States Department of Defense

    The United States Department of Defense (DoD) has a complex organizational structure. It includes the Army , Navy , the Marine Corps , Air Force , Space Force , the Unified combatant commands , U.S. elements of multinational commands (such as NATO and NORAD ), as well as non-combat agencies such as the Defense Intelligence Agency and the ...

  9. Modernizing Defense Acquisitions and Spurring Innovation in the Defense

    Apr 9, 2025 · Within 60 days of the date of this order, the Secretary of Defense shall submit to the President a plan to reform the Department of Defense’s acquisition processes that, to the maximum extent ...

  10. U.S. Department of Defense

    Apr 17, 2025 · The Department of Defense is America's largest government agency. Our mission is to provide the military forces needed to deter war and ensure our nation's security.