Self

Dr. Michaels

Stanley Baldwin

Sir Alex Gordon (uncredited)

Allen Bardeman

Col. James Parker

Uncle Morton Stearnes

Agamemnon

John Porter

Gen. Benedict Arnold

Sir Christopher Hatton

Sir Giles Amaury

Benton

Danzer

General

Saint Ebenezer / Pulo Besar

Michael, Duke of Strelsau

Sir Hugh De Bracy

Dr. Edward Jeffreys

Col. von Broeck

Colonel Creighton

Commander von Molter

Marchese Alessandro de Granazia

Philip Cagle

Stephen Paradou

Aubrey Milburn

Alexander Narbonne

John Tyson

Narrator (voice) (uncredited)

Elsworth Toohey

Lt. Michael Landers

Duque de Lorca

Ken Blake

Jones

Richard Marquess

Briefing Officer

John Flight

Edward Whymper

Capt. Markham

Nigel Taplow

Kit Woods

Lord Breethorpe

Dick Summers

Godfrey Marvin