• 
  Andrew V. McLaglen

  regizor

• 
  Reginald Rose

  scenarist

• 
  Gregory Peck

  Colonelul Lewis Pugh
• 
  Roger Moore

  Gavin Stewart
• 
  David Niven

  Colonelul W.H. Grice
• 
  Bernard Archard

  Underhill
• 
  Robert Hoffmann

  U-Boat Captain
• 
  Keith Stevenson

  Manuel

• 
  Patrick Holt

  Barker
• 
  Allan Cuthbertson

  Dickie Melborne
• 
  Martin Benson

  Mr. Montero
• 
  Mohan Agashe

  Brothel Keeper
• 
  Jack Watson

  Maclean
• 
  Michael Medwin

  Radcliffe
• 
  Scott Finch

  Croupier

• 
  Trevor Howard

  Jack Cartwright
• 
  Graham Stark

  Don Manners
• 
  John Standing

  Finley
• 
  Kenneth Griffith

  Charlie Wilton
• 
  George Mikell

  Captain of Ehrenfels
• 
  Brook Williams

  Butterworth
• 
  Percy Herbert

  Dennison
• 
  Donald Houston

  Hilliard
• 
  Faith Brook

  Mrs. Doris Grice
• 
  Dan van Husen

  U-Boat First Officer
• 
  William Morgan Sheppard

  'Patch' Lovecroft
• 
  Martin Grace

  Kruger
• 
  Patrick Macnee

  Major 'Yogi' Crossley
• 
  Patrick Allen

  Colin Mackenzie
• 
  Jürgen Andersen

  First Officer (as Jurgen Andersen)
• 
  Wolf Kahler

  Trompeta
• 
  Barbara Kellerman

  'Mrs. Cromwell'