Thousands of soldiers died miserably, even before they could put up a proper fight. They directly turned into dust, just like their king and the prince, because they tried to go against Chaos.
Chaos had asked the king to surrender the nymph, but he didn't even wait for a second to reject that offer and tried to kill Chaos instead.
What kind of sane people would think they would be able to overpower an immortal like Chaos? They should have been aware of their own limits and what they could or couldn't do. Chaos' power went far and beyond their imagination and their abilities to comprehend.
The sky was still so bleak, it was so dark with harsh wind howling in the distance and thunder shaking the ground, while Chaos walked steadily toward the palace, leaving behind no trace of thousands of soldiers.