Love the idea of militia, but I have some balance suggestions.

Currently ai is spamming militia camp even though it would be better for them to build barracks or regiment grounds in the long run.

Vanilla levy providing buildings have a priority order:

1. Regiment Ground
   
2. Barracks
   
3. Military Camps

PLUS holding dependencies.
For example; cities won't build Regiment Grounds and they prefer Barracks over Military Camps.
Currently Militia falls outside this order.

Can I suggest adding weight modifiers to militia based on holding type?
Making feudal rules in castles less likely to build Militia while Mayors in cities are more likely.

I also think it fits thematically. Castles gets military, cities get militia.

Cheers