Commander, U.S. Fleet Forces Command (COMUSFLTFORCOM) was originally established as Commander In Chief, U.S. Atlantic Fleet (CINCLANTFLT). CINCLANTFLT was established under one command in 1906 by President Theodore Roosevelt.
The Fleet concept came into being following the Spanish-American War when new bases acquired in the Caribbean and the Pacific were considered useless unless protected by an adequate fleet.
President Roosevelt placed great emphasis on naval readiness for war. During his first administration, from 1901 to 1905, authorization was obtained from Congress for 10 new battleships, four armored cruisers and 17 smaller craft. All battleships were assigned to the Atlantic Fleet and all armored cruisers and lighter cruisers were assigned to the newly created Pacific Fleet.
The first Commander in Chief of the Atlantic Fleet was Rear Adm. Robley D. Evans, who assumed command on 1 January 1906 aboard his flagship the battleship USS Maine (BB 10).