: Troops are often restricted to their Home Provinces . You must use mercenaries or allied troops to fill your ranks elsewhere.
If this is for the Europa Barbarorum style "Superbus" sub-mods, keep these mechanics in mind: superbus.7z
The file typically refers to a compressed archive associated with the "Superbus" modification or related content for strategy games like Total War (often specifically for the Europa Barbarorum II mod). Because ".7z" is a compressed format, you will need specific tools to open and use it. How to Open and Use superbus.7z : Troops are often restricted to their Home Provinces