Who are the rebels?

"Boom boom" The earth was shaking continuously, echoing with the earth-shaking roar. The cavalry were galloping, and all the people were in a panic, retreating madly. In just a moment, there were no more onlookers around the beheading platform. It was all cavalry. The cavalry in the front, their armor and horses were all red. At the same time, behind the beheading platform, many Snow Moon soldiers rushed out in a mighty force. But at this moment, the Red Blood Iron Cavalry all stopped, and their...