Louis Wolheim as Stanislas 'Kat' Katczinsky

Lew Ayres as Paul Bäumer

John Wray as Himmelstoss

Arnold Lucy as Kantorek

Ben Alexander as Franz Kemmerich

Scott Kolk as Leer

Owen Davis Jr. as Peter

Walter Rogers as Behn

William Bakewell as Albert Kropp

Russell Gleason as Mueller

Richard Alexander as Westhus

Harold Goodwin as Detering

Slim Summerville as Tjaden

G. Pat Collins as Bertinck

Beryl Mercer as Paul's Mother

Edmund Breese as Herr Meyer

Ernie Adams as 2nd Medic Orderly (uncredited)

Marion Clayton Anderson as Anna Bäumer (uncredited)

Poupée Andriot as French Girl (uncredited)

Vince Barnett as Assistant Cook (uncredited)

Daisy Belmore as Frau Kemmerick (uncredited)

Glen Boles as Young Soldier (uncredited)

Heinie Conklin as Joseph Hammacher (uncredited)

Yola d'Avril as Suzanne (uncredited)

Renée Damonde as French Girl (uncredited)

Arthur Gardner as Student (uncredited)

Raymond Griffith as Gérard Duval (uncredited)

Ellen Hall as Young Girl (uncredited)

William Irving as Ginger - the Cook (uncredited)

Frederick Kohner as Minor Role (uncredited)

Frank Leichtfried as Minor Role (uncredited)

Tom London as 1st Medic Orderly (uncredited)

Bertha Mann as Sister Libertine (uncredited)

Joan Marsh as Poster Girl (uncredited)

Edwin Maxwell as Herr Bäumer (uncredited)

Jack McHugh as Schoolboy (uncredited)

Maurice Murphy as Soldier (uncredited)

Robert Parrish as Schoolboy (uncredited)

Bodil Rosing as Mother of Hospital Patient (uncredited)

Wolfgang Staudte as Minor Role (uncredited)

Jack Sutherland as Minor Role (uncredited)

David Tyrell as Soldier (uncredited)

Dorothy Vernon as Charwoman (uncredited)

Fred Zinnemann as German Soldier / French Ambulance Driver (uncredited)