Playing as Ursun Revivalists, the orcs attacked my settlement Zharr Naggrund. Another enemy army belonging to Goldtooth was also standing next to my settlement. Because I am their common enemy, the ogres reinforced the orcs. What's weird is that their reinforcing point was placed INSIDE my walls:
Here you can see the reinforcing point in the actual battle:
The ogre reinforcements come in through the wall, right inside the settlement:
This should not be possible.