The moment Feiria noticed Sigma's blood lust, she summoned a massive wall of bones and hid behind them … those were some crazy senses since Sigma was five hundred meters away from her and watching the retreat of the human forces. Still, perhaps he had been naive waiting for something less than that when the enemy managed t achieve that much.
According to everyone, all of their forces combined were around fifteen thousand. However, only half of that was still standing, and more than half of that was heavily wounded… fighting against the leftover soldiers and the skeletons that were emerging wasn't an option under normal means.
"... Well, I'd dare say that we are in a bit of a difficult spot now," Nara said as she watched the massive undead army marching toward them. "We are their first target, and we are tired from the fight."