The United States Navy (USN) is the service branch of the United States Armed Forces and part of the civilian-led Department of the Navy, which is led by the Secretary of the Navy. The military head of the U.S. Navy is the chief of naval operations, who is assisted by the vice chief of naval operations and master chief petty officer of the Navy. The Navy was founded on 13 October 1775 as the Continental Navy, which was disbanded on 1 August 1785 before being reestablished as the modern U.S. Navy on 20 January 1794.