The Gallant Hours is an American docudrama from 1960 about William F. Halsey, Jr. and his efforts in fighting against Admiral Isoroku Yamamoto and the Imperial Japanese Navy in the Guadalcanal campaign of World War II.
This film was directed by Robert Montgomery, who also did uncredited narration, and it stars James Cagney as Admiral Halsey. Featured in the cast are Dennis Weaver, Ward Costello, Vaughn Taylor, Richard Jaeckel, and Les Tremayne. The screenplay was by Frank D. Gilroy and Beirne Lay, Jr., and the unusual a cappella choral score was composed and conducted by Roger Wagner, although the theme song was written by Ward Costello.
The film was produced by Montgomery and Cagney, and it was the only film made by their joint production company. It was also Cagney's last starring role in a dramatic film. The Gallant Hours was released by the United Artists company on June 22, 1960.