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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.
The President of the United States is, according to the Constitution, the Commander-in-Chief of the U.S. Armed Forces and Chief Executive of the Federal Government. The Secretary of Defense is the "Principal Assistant to the President in all matters relating to the Department of Defense", and is vested with statutory authority (10 U.S.C. § 113) to lead the Department and all of its component ...
The secretary of defense, appointed by the president with the advice and consent of the Senate, is by federal law (10 U.S.C. § 113) the head of the Department of Defense, "the principal assistant to the President in all matters relating to Department of Defense", and has "authority, direction and control over the Department of Defense".
Its main responsibilities are to control the Armed Forces of the United States. 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). [1]
Department of Defense (as executive department) became and still is a military department within the Department of Defense: Secretary of the Navy: Francis P. Matthews: Post Office: February 20, 1792 July 1, 1971: United States Postal Service: Postmaster General: Winton M. Blount: Commerce and Labor: February 14, 1903 March 4, 1913 Department of ...
800-290-4726 more ways to reach us. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. ... defense firms want more expertise at the Defense Department ...
The Office of the Secretary of Defense (OSD) is a headquarters-level staff of the United States Department of Defense.It is the principal civilian staff element of the U.S. Secretary of Defense, and it assists the Secretary in carrying out authority, direction and control of the Department of Defense in the exercise of policy development, planning, resource management, fiscal, and program ...
The agency was originally established as the Defense Investigative Service and was created on January 1, 1972. [2] In 1999, the agency changed its name to the Defense Security Service. [ 3 ] In July 2019, DSS was reorganized as DCSA, in conjunction with the transfer of responsibility for conducting background investigations from OPM 's National ...