America's Navy - A Global Force for Good: Navy.com. United States Navy. The United States Navy (USN) is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States.
It is estimated to be larger than the next 13 largest navies combined in terms of battle fleet tonnage.[5][6] The U.S. Navy also has the world's largest carrier fleet, with 10 in service, 2 under construction,[7] 8 more planned and two in active reserve. The service has 317,054 personnel on active duty and 109,671 in the Navy Reserve. It operates 289 ships in active service and more than 3,700 aircraft.[3] The navy traces its origins to the Continental Navy, which was established during the American Revolutionary War and was essentially disbanded as a separate entity shortly thereafter. The U.S. Navy.