- Louis Wolheim
- Kat
- Lew Ayres
- Paul
- John Wray
- Himmelstoss
- Arnold Lucy
- Kantorek
- Ben Alexander
- Kemmerich
- Scott Kolk
- Leer
- Owen Davis Jr.
- Peter
- Walter Rogers
- Behn
- William Bakewell
- Albert
- Russell Gleason
- Mueller
- Richard Alexander
- Westhus
- Harold Goodwin
- Detering
- Slim Summerville
- Tjaden
- G. Pat Collins
- Bertinck
- Beryl Mercer
- Paul's Mother
- Edmund Breese
- Herr Meyer
- Zasu Pitts
- Frau Bäumer - Silent Version Trailer only
- Ernie Adams
- 2nd Medic Orderly
- Marion Clayton Anderson
- Anna Bäumer
- Poupée Andriot
- French Girl
- Vince Barnett
- Assistant Cook
- Daisy Belmore
- Frau Kemmerick
- Glen Boles
- Young Soldier
- Leroy Boles
- Undetermined Secondary Role
- Heinie Conklin
- Joseph Hammacher
- Yola d'Avril
- Suzanne
- Renée Damonde
- French Girl
- Arthur Gardner
- Student
- Raymond Griffith
- Gérard Duval
- Ellen Hall
- Young Girl
- William Irving
- Ginger - the Cook
- Frederick Kohner
- Minor Role
- Frank Leichtfried
- Minor Role
- Tom London
- 1st Medic Orderly
- Bertha Mann
- Sister Libertine
- Joan Marsh
- Poster Girl
- Edwin Maxwell
- Herr Bäumer
- Jack McHugh
- Schoolboy
- Maurice Murphy
- Soldier
- Robert Parrish
- Schoolboy
- Bodil Rosing
- Mother of Hospital Patient
- Sig Ruman
- Mr. Meyer
- Wolfgang Staudte
- Minor Role
- Jack Sutherland
- Minor Role
- David Tyrell
- Soldier
- Dorothy Vernon
- Charwoman
- Fred Zinnemann
- German Soldier / French Ambulance Driver (uncredited)
