Rules of Engagement

Summary
SG-1 discovers a planet where SGC look-alikes are in the middle of a pitched battle. After a few minutes of confusion they discover that in reality they are a team of young boys in a boot camp, and are practicing war games. It is revealed that they are using replica weapons that inflict no real harm on the opponent, but instead deliver a nasty jolt. This is trouble though, because SG-1's weapons are recirculated into the fake ones. After a call to the central area, they are revealed to be soldiers of Apophis, trained to infiltrate the SG command. The search for the weapons continues, but it is too late. A soldier is accidentally killed with one of the real weapons, but instead of stopping, the recruits see this as a sign to upgrade to real weaponry in their war games.

In order to prevent the boys from pointlessly slaughtering themselves, the team hatches a plot to prevent both the invasion of Earth through the SGC and to convince the boys that Apophis is a false god. A recording of Apophis's death proves his lack of godhood, and the soldiers disband and return to their planets of origin.