• 
  Rod Steiger

  Frank
• 
  Lee Marvin

  G.I.
• 
  Pier Angeli

  Teresa Russo
• 
  Lewis E. Ciannelli

  Cheyenne
• 
  John Ericson

  Philip Cass
• 
  Ave Ninchi

  Teresa's Mother
• 
  Robert Wagner

  G.I.
• 
  Bill Mauldin

  Grissom

• 
  Ralph Meeker

  Dobbs
• 
  Franco Interlenghi

  Mario
• 
  Peggy Ann Garner

  Susan Cass
• 
  Ed Binns

  Brown
• 
  Aldo Silvani

  Professor Crocce
• 
  Patricia Collinge

  Mrs. Clara Cass, Philip's Mother
• 
  Richard McNamara

  G.I. cook

• 
  Edith Atwater

  Mrs. Lawrence