Just a quick update, extolling the virtues of free stuff on the web, prompted by the last issue of Wargames Illustrated and the Vietnam buildings article. Great buildings, with lots of different uses. Link I've built two of the jails so fare and will be using some of the larger buildings to create the sea front of my WW2 Italian colonial town from N/East Africa.
For the barrack buildings on the airfield and Government buildings Ebob miniatures have a great free to down load range of buildings for their 28mm scale POW game, Scroll down the page to the bottom for the POW camp buildings, which make great 15mm scale barrack blocks if printed out at 50% size of the PDF. Link