About the Navy League of the United States The Navy League of the United States, founded in 1902 with the support of Presiden ... t Theodore Roosevelt, is a nonprofit civilian, educational and advocacy organization that supports America’s sea services: the Navy, Marine Corps, Coast Guard and U.S.-flag Merchant Marine. As part of its mission focus, the Navy League of the United States: - Enhances the morale of sea service personnel and their families through national and council level programs. - Provides a powerful voice to educate the public and Congress on the importance of our sea services to our nation’s defense, well-being and economic prosperity. - Supports youth through programs, such as the U.S. Naval Sea Cadet Corps, Junior ROTC and Young Marines, that expose young people to the values of our sea services. read more