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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 ...
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 ...
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 ...
The chain of command leads from the president (as commander-in-chief) through the secretary of defense down to the newest recruits. [2] [3] The United States Armed Forces are organized through the United States Department of Defense, which oversees a complex structure of joint command and control functions with many units reporting to various commanding officers.
The Defense Intelligence Agency ( DIA) is an intelligence agency and combat support agency of the United States Department of Defense, specializing in defense and military intelligence . A component of the Department of Defense (DoD) and the Intelligence Community (IC), DIA informs national civilian and defense policymakers about the military ...
The U.S. Armed Forces has significant capabilities in both defense and power projection due to its large budget, resulting in advanced and powerful technologies which enable widespread deployment of the force around the world, including around 800 military bases outside the U.S. [21] The U.S. Air Force is the world's largest air force, followed ...
e. President Biden will make many appointments and nominations to serve in various roles in the Department of Defense. These include the Army, Navy, Marines, and Air Force. Almost all of these nominations will need to be confirmed by the United States Senate before they can begin service. As was the case with Lloyd Austin, a waiver is required ...