The army headed to the north is two hundred strong. The two hundred strong individuals are consisting of the most powerful of the warriors under King Leonidas and Adrian's group. Five of the royal knights under King Leonidas did not join because of the side effect of Beastification.
The five of those royal knights could still move even after the side effect of Beastification but they will not be in their full capacity which would mean that they could be more likely killed. Although that could also be said for this group as they only have one of the overlords at this time.
Adrian will call upon the two overlords when they reach the location where the Wolf of Disaster is staying. Since there is still two more of the children of the Wolf of Disaster, it has been decided that the eastern and western overlord will deal with them with reinforcements from the group.