After the battle ended, Raigon and the other higher-ups of the reinforcement decided to hold a party for the soldiers. Even though the battle had gone almost perfectly and barely any soldiers died, it was still mentally draining for the soldiers, not to mention that they should be allowed to rest a bit after going through a battle against such a powerful army. Without Reign the battle would have been much tougher and perhaps Raigon would have been forced to use some other trump cards that he had saved.
With Reign's help however the battle went smoothly, after he had managed to kill the two army leaders the rest of the army were like headless chickens, coupled with the wall that had appeared in order to block their escape made the fighting spirit of the army low, perhaps the vice-leader could have done something to inspire them but unfortunately for him, he was hunted down by Reign and killed swiftly.
