Buster Keaton

Elmer J. Stuyvesant, Jr.

Sally Eilers

Mary

Cliff Edwards

Nescopeck

Edward Brophy

Sgt. Brophy

Victor Potel

Svendenburg

Arnold Korff

Gustave

Frank Mayo

Capt. Scott

William Steele

Lt. Randolph

Bobby Barber

Doughboy (uncredited)

Sidney Bracey

Recruiter (uncredited)

John Carroll

Doughboy in Elmer's Squad (uncredited)

Jack Cheatham

Guard House Sentry (uncredited)

Joseph W. Girard

General Hull (uncredited)

Pat Harmon

Induction Non-Com (uncredited)

Tiny Sandford

Bit (uncredited)

Edward Sedgwick

Guggleheimer the Camp Cook (uncredited)

Harry Strang

Induction Officer (uncredited)

Harry Stubbs

Sergeant (uncredited)