Cornel Wilde as Maj. John Boulton

Michael Wilding as Maj. John Andre

George Sanders as Dr. Jonathan Odell

Anne Francis as Sally Cameron

Robert Douglas as Gen. Benedict Arnold

John McIntire as Gen. Robert Howe

Rhys Williams as Peter Andre

John Dehner as Nathanael Greene

Bobby Driscoll as Ben Potter

James Westerfield as Col. Jameson

Paul Cavanagh as Sir Henry Clinton

Peter Adams as Lt. Blair

Tristram Coffin as Col. Varick

Robert Dix as Lt. Evans

Michael Fox as Maj. Russell

Paul Frees as Narrator (voice)

Dabbs Greer as Capt. Brewster

Robin Hughes as Col. Tarleton

Bruce Lester as Col. Simcoe

Frank Mills as Tony

Gordon Richards as Mr. Cameron

Robert Stevenson as Stout Man (uncredited)