The divergence from the norm continued after the fighting was over, as well. Usually, the human forces would be hastily retreating from the site of the battle to escape the converging abominations that had been attracted by the noise and the smell of blood...
However, the joint army defiantly stayed in place. A field camp was established, surrounded by hastily constructed fortifications. Teams of salvagers prowled the vast battlefield, retrieving soul shards and dismantling the bodies of the most powerful Nightmare Creatures for precious materials.
It was as if the leaders of the expedition force were not at all concerned by the threat of the migrating hordes. On the contrary, they seem to welcome the danger.