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  2. United States Department of Defense - Wikipedia

    en.wikipedia.org/wiki/United_States_Department...

    The United States Department of Defense ( DoD, [2] USDOD, or DOD) is an executive branch department of the federal government of the United States charged with coordinating and supervising all agencies and functions of the U.S. government directly related to national security and the United States Armed Forces.

  3. United States Secretary of Defense - Wikipedia

    en.wikipedia.org/wiki/United_States_Secretary_of...

    Website. defense.gov. The United States secretary of defense ( SecDef) is the head of the United States Department of Defense, the executive department of the U.S. Armed Forces, and is a high-ranking member of the federal cabinet. [5] [6] [7] The secretary of defense's position of command and authority over the military is second only to that ...

  4. United States Department of the Navy - Wikipedia

    en.wikipedia.org/wiki/United_States_Department...

    The United States Department of the Navy (DON) is one of the three military departments within the Department of Defense of the United States of America.It was established by an Act of Congress on 30 April 1798, at the urging of Secretary of War James McHenry, to provide a government organizational structure to the United States Navy (USN); since 1834, it has exercised jurisdiction over the ...

  5. The Pentagon - Wikipedia

    en.wikipedia.org/wiki/The_Pentagon

    Designated VLR. 18 April 1989 [4] The Pentagon is the headquarters building of the United States Department of Defense, in Arlington County, Virginia, across the Potomac River from Washington, D.C. The building was constructed on an accelerated schedule during World War II. As a symbol of the U.S. military, the phrase The Pentagon is often used ...

  6. Organizational structure of the United States Department of ...

    en.wikipedia.org/wiki/Organizational_structure...

    The Pentagon, headquarters 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 ...

  7. Defense Information Systems Agency - Wikipedia

    en.wikipedia.org/wiki/Defense_Information...

    United StatesArmed Forces. The Defense Information Systems Agency ( DISA ), known as the Defense Communications Agency ( DCA) until 1991, is a United States Department of Defense (DoD) combat support agency composed of military, federal civilians, and contractors.

  8. Defense Finance and Accounting Service - Wikipedia

    en.wikipedia.org/wiki/Defense_Finance_and...

    Website. www.dfas.mil. The Defense Finance and Accounting Service ( DFAS) is an agency of the United States Department of Defense (DOD), headquartered in Indianapolis, Indiana. The DFAS was established in 1991 under the authority, direction, and control of the Under Secretary of Defense (Comptroller)/Chief Financial Officer to strengthen and ...

  9. Defense Technical Information Center - Wikipedia

    en.wikipedia.org/wiki/Defense_Technical...

    discover .dtic .mil. The Defense Technical Information Center ( DTIC, / ˈdiːtɪk / [2]) is the repository for research and engineering information for the United States Department of Defense (DoD). DTIC's services are available to DoD personnel, federal government personnel, federal contractors and selected academic institutions.