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
Pitzy Katz
Abie Cohn
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)
Jimmie Dundee
Riveter (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)