United States Naval Academy (USNA) The United States Naval Academy (USNA; abbreviation: USNA; also known as the United States Naval Academy) is the only national officer school in the United States, one of the allied schools of the Patriot League, founded on October 10, 1845, located in Annapolis, the capital of Maryland, so also known as the Annapolis Military Academy. It is also known as the Annapolis Military Academy. It was ranked 13th in the U.S. in 2015 in liberal arts colleges;