Cast

Gregory Peck

Col. Lewis Pugh

Roger Moore

Capt. Gavin Stewart

David Niven

Col. W.H. Grice

Trevor Howard

Jack Cartwright

Barbara Kellerman

Mrs. Cromwell

Patrick Macnee

Major 'Yogi' Crossley

Kenneth Griffith

Charlie Wilton

Patrick Allen

Colin Mackenzie

Wolf Kahler

Trompeta

Robert Hoffmann

U-Boat Captain

Crew

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Maurice Binder

Main Title Designer (Art)

Andrew V. McLaglen

Director (Directing)

Reginald Rose

Writer (Writing)

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James Leasor

Writer (Writing)

John Glen

Editor (Editing)

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Roy Budd

Original Music Composer (Sound)

Eddie Powell

Stunts (Crew)