Meet John Doughboy

Mel Blanc

Porky Pig / Soldiers / Horse / Chicken / Spitter Plane / Rochester (voice) (uncredited)

Billy Bletcher

Short Soldier (voice) (uncredited)

Robert C. Bruce

Narrator - Citizen Sugar Cane (voice) (uncredited)

Robert Clampett

Siege Gun acting like Chicken (uncredited)

Jack Lescoulie

Various (voice) (uncredited)