Fredric March as Lieutenant Michel Denet

Warner Baxter as Captain Paul La Roche

Lionel Barrymore as Papa La Roche / Pvt. Morin

June Lang as Monique La Coste - nurse

Gregory Ratoff as Pipe-smoking whistling sgt

Victor Kilian as LaRoche's tall sgt

Paul Stanton as Relief captain

John Qualen as Duflous

Julius Tannen as Lieutenant Tannen

Theodore von Eltz as Major

Paul Fix as Rigaud

Leonid Kinskey as Ledoux

Jacques Lory as Courier

Jacques Vanaire as Doctor

Edythe Raynore as Nurse

George Warrington as Old soldier

Eugene Borden as Sentry (uncredited)

Louis Mercier as Man in trench (uncredited)

Joe Cunningham as Officer (uncredited)

Constant Franke as Sergeant (uncredited)

Jean De Briac as Sergeant (uncredited)

Ben Hendricks Jr. as Sergeant (uncredited)

Jean Perry as Captain (uncredited)

Nicholas Soussanin as French colonel (uncredited)

Barlowe Borland as Information clerk (uncredited)

Anne O'Neal as Nurse (uncredited)

Paul McVey as Signal man (uncredited)

Robert Graves as Colonel (uncredited)

John Bleifer as Runner (uncredited)

Bob Cautiero as Soldier runner (uncredited)

Pat West as Soldier (uncredited)

Karl Hackett as Soldier (uncredited)

Frank McGlynn Jr. as Soldier (uncredited)

Jack Pennick as Soldier (uncredited)

Hector V. Sarno as Soldier (uncredited)