Dwells – Unique dwellings for creatures on the map, levels 4-7.

I don't know if you're aware of this, but I haven't seen any posts about it:
Basically, the maps can generate T4-T7 dwellings from random dwellings; you just need to add them to the dwelling registry. =)

Too bad... I tested it, and it turns out that the building type ID overrides the original military post ID.