Buster Keaton
Elmer J. Stuyvesant, Jr.
Bobby Barber
Doughboy (uncredited)
Harry Stubbs
Sergeant (uncredited)
Tiny Sandford
Bit (uncredited)
Cliff Edwards
Nescopeck
Edward Brophy
Sgt. Brophy
Arnold Korff
Gustave
Sidney Bracey
Recruiter (uncredited)
Victor Potel
Svendenburg
John Carroll
Doughboy in Elmer's Squad (uncredited)
Joseph W. Girard
General Hull (uncredited)
Sally Eilers
Mary
Edward Sedgwick
Guggleheimer the Camp Cook (uncredited)
Harry Strang
Induction Officer (uncredited)
Frank Mayo
Capt. Scott
Pat Harmon
Induction Non-Com (uncredited)
Jack Cheatham
Guard House Sentry (uncredited)
William Steele
Lt. Randolph