United States Navy

The United States Navy (USN) is the branch of the United States Military] responsible for conducting naval operations. The U.S. Navy currently has over 335,000 personnel on active duty and 128,000 in the Reserve. It operates 280 ships in active service and more than 4,000 aircraft.

The Navy is administratively managed by the Department of the Navy, which is headed by the civilian Secretary of the Navy. The Department of the Navy is a division of the United States Department of Defense, which is headed by the Secretary of Defense. The highest ranking Navy officer is the Chief of Naval Operations.