Found this today and although its for a SciFi game , the basic technique could work well for the games mentioned in the title
http://theleadwillwalktheearth.blogspot.com.ar/2014/05/dust-tactics-how-to-make-custom-3d.html
Nice looking board with plenty of space for the figures. A few issues ago in the Wargames Illustrated magazine, they were giving away free copies of the Dust rules.