At first while he was observing the proceedings of the battle, Khao'khen was already prepared to have the sound of retreat to be announced but when the chants broke out among his forces, he withheld the call. Although they are losing the real engagement with the number of casualties and wounded with the employed strategy of the enemy forces, the chants of his forces and their act of taunting the enemy was dealing another kind of damage.
Most armies needed to prevent their morale from falling in order to ensure that their combat capability remains at its peak. According to Khao'khen's knowledge, there were instances of a powerful army being defeated by a weaker foe after taking a disastrous hit upon their morale and perhaps the current situation would allow them to replicate the same thing.