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The Mission is the fourth episode of the twelfth season of Gunsmoke, and the four hundred thirteenth episode overall.
Rafael Campos (Young Soldier), Robert Tafur (Col. Romero), Ruben Moreno (Captain), Mike Abelar (Soldier), Bert Madrid (Blacksmith), Bob Random (Reb Jessup), Robert F. Simon (Colonel Amos Jessup), Steve Ihnat (Ashe), Warren Oates (Lafe), Arch Johnson (Sgt. Macklin), Jim Davis (Jim Bassett)