He was named Commander-in-Chief of the Atlantic Fleet later that year, ranking as Admiral from 10 March 1915 until completing his assignment in 1916. He served on the General Board until retiring on 23 November 1919, earning the Distinguished Service Medal for his meritorious service during World War I. Twice recalled for temporary active duty, he served in 1925 on a board studying the most effective use of aircraft in national defense. Admiral Fletcher died in New York City 28 November 1928.
The USS Fletcher (DD-445) was named for Admiral Frank F. Fletcher.