Robert Keith

as Captain Jeremiah Brown

as Tullio King of Rome

as Sam Pegler

as Col. Rogers

as Capt. Miranov

as Julian

as The Colonel

as Alexander Bullock

as Col. Cousins

as Jasper Hadley

as Police Chief Jim Backett

as Lt. Brannigan

as Bernard V. Loomis

as Father Cannon

as Gregory Tuttle

as Bill Satterwhite

as Dr. Garson Lee

as Sheriff Harry Bleeker

as Judge Gordon Kimbell

as Lieutenant Colonel Hillary Whalters

as Steve Morgan

as Walter Medford

as Sam Doyle

as Paul E. Cosick

as Thomas Greer

as George Degnan

as Inspector Martin Ferris

as Mandel

as Henry Winters

as T. Jefferson Leffingwell

as Tim Harveigh

as 'Mac' McCreery

as George Hackett

as Union Courier (uncredited)

as Dr. John Kimble

as Doc

as Jason Foster

as Arthur 'The Professor' Duffy

as Self

as Brutus