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  2. 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 ...

  3. 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 ...

  4. List of U.S. Department of Defense agencies - Wikipedia

    en.wikipedia.org/wiki/List_of_U.S._Department_of...

    The Department was established in 1947 and is currently divided into three major Departments—the Department of the Army, Navy and Air Force—and has a military staff of 1,418,542 (553,044 US Army; 329,304 US Navy; 202,786 US Marine Corps; 333,408 US Air Force).

  5. 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.

  6. Structure of the United States Navy - Wikipedia

    en.wikipedia.org/wiki/Structure_of_the_United...

    (As this is a Department of Defense/Department of the Navy regulation, no further 10 U.S. Code authority, other than already cited above, is required for the Secretary of the Navy, who supervises both the U.S Navy, and the U.S. Marine Corps, as well as the U.S. Coast Guard whenever it is assigned to the Department of the Navy, to specify that ...

  7. United States Secretary of the Navy - Wikipedia

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

    The secretary of the Navy ( SECNAV) is a statutory officer ( 10 U.S.C. § 8013) and the head ( chief executive officer) of the Department of the Navy, a military department within the United States Department of Defense . By law, the secretary of the Navy must be a civilian at least five years removed from active military service.

  8. Naval Criminal Investigative Service - Wikipedia

    en.wikipedia.org/wiki/Naval_Criminal...

    The United States Naval Criminal Investigative Service (NCIS) is the primary investigative law enforcement agency of the U.S. Department of the Navy.Its primary function is to investigate major criminal activities involving the Navy and Marine Corps, though its broad mandate includes national security, counterintelligence, counterterrorism, cyberwarfare, and the protection of U.S. naval assets ...

  9. Uniformed services of the United States - Wikipedia

    en.wikipedia.org/wiki/Uniformed_services_of_the...

    The term "uniformed services" means—. (A) the armed forces; (B) the commissioned corps of the National Oceanic and Atmospheric Administration; and. (C) the commissioned corps of the Public Health Service. The six uniformed services that make up the armed forces of the United States are defined in the previous clause, 10 U.S.C. § 101 (a) (4 ...