Walter Brooke as Gen. Samuel T. Merritt

Eric Fleming as Capt. Barney Merritt

Mickey Shaughnessy as Sgt. Mahoney

Phil Foster as Jackie Siegle

William Redfield as Roy Cooper

William Hopper as Dr. George Fenton

Benson Fong as Imoto

Ross Martin as Andre Fodor

Vito Scotti as Sanella

John Dennis as Donkersgoed

Michael Fox as Elsbach

Joan Shawlee as Rosie McCann

Iphigenie Castiglioni as Mrs. Heinz Fodor

Rosemary Clooney as Musical Number (archive footage) (uncredited)