is the navy part of the department of defense
United States Department of Defense The Department of Defense is headed by the Secretary of Defense, a cabinet-level head who reports directly to the President of the United States. Beneath the Department of Defense are three subordinate military departments: the United States Department of the Army, the United States Department of the Navy, and the United States Department of the Air Force. In addition, four national intelligence services are subordinate to the Department of Defense: the Defense Intelligence Agency (DIA), the National Security Agency (NSA), the National Geospatial-Intelligence Agency (NGA), and the National Reconnaissance Office (NRO). Other Defense Agencies include the Defense Advanced Research Projects Agency (DARPA), the Defense Logistics Agency (DLA), the Missile Defense Agency (MDA), the Defense Health Agency (DHA), Defense Threat Reduction Agency (DTRA), the Defense Security Service (DSS), and the Pentagon Force Protection Agency (PFPA), all of which are under the command of the Secretary of Defense. Military operations are managed by nine regional or functional Unified combatant commands. The Department of Defense also operates several joint services schools, including the National Defense University (NDU) and the National War College (NWC).
Admiral of the Navy (United States) The Admiral of the Navy (abbreviated as AN) is the highest possible military rank in the United States Navy. The rank is intended as an "admiralissimo" type position which is senior to the rank of fleet admiral.
United States Department of the Navy The United States Department of the Navy (DoN) was established by an Act of Congress on April 30, 1798 (initiated by the recommendation of James McHenry),[1] to provide a government organizational structure to the United States Navy, the United States Marine Corps (from 1834 onward) and, when directed by the President (or Congress during time of war), the United States Coast Guard, as a service within the Navy,[2] though each remain independent service branches. The Department of the Navy was an Executive Department and the Secretary of the Navy was a member of the President's cabinet until 1949, when amendments to the National Security Act of 1947 changed the name of the National Military Establishment to the Department of Defense and made it an Executive Department. The Department of the Navy then became, along with the Department of the Army and Department of the Air Force, a Military Department within the Department of Defense: subject to the authority, direction and control of the Secretary of Defense.
United States Marine Corps The Department of the Navy, led by the Secretary of the Navy, is a military department of the cabinet-level U.S. Department of Defense that oversees the Marine Corps and the Navy. The most senior Marine officer is the Commandant, unless a Marine officer is the Chairman or Vice Chairman of the Joint Chiefs, responsible to the Secretary of the Navy for organizing, recruiting, training, and equipping the Marine Corps so that its forces are ready for deployment under the operational command of the Combatant Commanders. The Marine Corps is organized into four principal subdivisions: Headquarters Marine Corps (HQMC), the Operating Forces, the Supporting Establishment, and the Marine Forces Reserve (MARFORRES or USMCR).