... not quite insets, more like... i will give an example.
Take the "USS Lionheart Part 1" map. It has the transmat stations, right? In context of that map, what I would meen to do would be to combine all the transmat stations into one multiple polygon, and have an individual army box for every polygon that there is to the country.
The specs for that would be:
4 army boxes.
I am not editing that map by the way, just using it as an example...