Thx for your reply. I got it working now. Due to a mistake i moved a total of 21 army's into a loyalty square. How can i move them out again? Or are they lost forever? I cant seem to select the loyalty square when i am at my fortify step.

I dont really get the loyalty thing. How do i ally with a group and how do i find out wich cities are loyal to what groups?
Maybe a noob question but i am just missing a point.