Anybody who played D & D in the 80s has to remember one of the first complete worlds to game in, the World of Greyhawk. I lost more than a few characters to the lands of Oerth. I dug it up the book a few months back and found some inspiration to paint up all the extra fantasy/medieval figs I had lying about that were left over from larger units. The first unit had to be from the Free City of Greyhawk itself. Some Hundred Years War French pavasiers would fit nicely as Greyhawk guardsmen called to battle.
My ultimate is to do a few of these one offs a year till all the lands of Flanaess are represented.