Richard Salisbury Bull, Jr. was born in Wilkinsburg, Pennsylvania, on 6 January 1913. Graduating from the United States Naval Academy, he was commissioned ensign on 4 June 1936. Trained as a naval aviator in 1938–39 at NAS Pensacola, Fla., he served in the fleet in 1941. He became a naval observer assigned to the American Embassy in London, England.