Below is a photo of the buildings I have so far, with a few troops and vehicles. In the foreground are two sections of UN peacekeepers with two M113 ACV vehicles, a supporting Panhard armoured car can be seen in the distance.
First is a small compound of three buildings constructed from 5mm foamcore on an MDF base:
The same method produced this larger building suitable for use as an embassy or suchlike:


The next building is a factory (same materials as above). Most of the buildings I have made have lift-off roofs:

The ventilation thingies on the roof of the factory and embassy are the tops from small water bottles. The posters are images taken from the web, printed on ordinary paper and glued to the buildings with thinned down PVA. The PVA is also painted on top of the posters to protect them.
The rest of my buildings are excellent resin pieces from Fieldworks which I can heartily recommend.
The next building is a factory (same materials as above). Most of the buildings I have made have lift-off roofs:
The rest of my buildings are excellent resin pieces from Fieldworks which I can heartily recommend.