When Achim rendezvous with Captain Hohen's group a few hours ago, they ended up falling into a trap. A skirmish broke out between the two, with Hohen's side on the losing side.
At least, that had been the case at the start.
When Hohen finally made use of his skills that made him good at interrogation— which usually ended up in torture— he successfully manipulated Achim's knight into choosing Kesiah's side. He mainly talked of Kesiah's ideals as to why she wanted to usurp the King— providing equality to all.
It should be noted that the Armakean Knights did not have rights of their own. The moment they born, their fate as a knight had been sealed. Once they learned how to walk, or hold a sword, they were taught how to fight and be loyal to the Armakean's Royal Family— particularly, the King. Any actions or decisions they made would always prioritize the safety of the King or the Royal Family member they were tasked to obey or protect.