• 
  George C. Scott

  regizor

• 
  Martin Sheen

  Maj. Holliford
• 
  George C. Scott

  Dan Logan
• 
  Dabbs Greer

  Dr. Thompson
• 
  Kenneth Tobey

  Col. Alan A. Nickerson
• 
  Richard Basehart

  Dr. Roy Caldwell
• 
  Lou Frizzell

  J.T. 'Spike' Boynton (veterinarian)
• 
  John Dierkes

  Bill Parker

• 
  Barnard Hughes

  Dr. Spencer (Public Health Service)
• 
  William Jordan

  Maj. Coopr
• 
  Ed Lauter

  Simpson
• 
  Robert Walden

  Dr. Tom Janeway

• 
  Chuck Arnold

  camera and electrical departme
• 
  Fred J. Koenekamp

  imagine
• 
  Lalo Schifrin

  departament sunet

• 
  Michael Kahn

  montaj
• 
  Dan Wallin

  music department
• 
  Fred Weintraub

  producător
• 
  Paul Lombardi

  special effects
• 
  Bill Hickman

  cascador