I am Kaine!! God king of the Wraith-men exiles. With my brother Carrion and his twelve sons and their hordes, we have laid waste to many realms. It is only when we went to war with holy city of Morguss we got to fight worthy prey. My black legions march on their Holy Citadel that resides inside a mountain. The Paladins of Fury and the Battle Maidens sally out with the rest of the Holy Orders to fight for their god... it is my pleasure to send them to him.
The battle is long and bloody but even ones blessed by a god can’t fight against an actual one; my Death Walkers and Skin Takers make short work of them. I cut down all who stand in my way.
With the battle won all that was left was to kill the defenders on the walls; there are only a few knights and men-at-arms left. With some time for the Skin Takers to go to work on the dead, I ready my men to breach the wall and cut down the filth that remains. With a swing of my Screaming Mace, my men climb the ladders, but no one attacks. The walls are deserted; the cravens must have run into the city, but why? I would order my men to hunt them down like dogs but even dogs would die for their owners; these men are less than dogs.
Where I'm from, men do not flee from battle; even a child would stand and fight. It’s not like I have not encountered routed armies before but the citadel has no way of escape; running from the wall just makes it easier for me to kill them. "Better to stand and fight than die running"; at least they could have killed some of my men; all they will do now is give them exercise.
Question: Why would this Army Retreat if they will die anyway?