One of the biggest issue when making the scenarios based on the 1st and 2nd Balkan War for Bloody Big Battles, was the lack of good detailed maps. Since all sides expected to fight again over the same terrain, most of the maps in Staff histories, and thus on the secondary works that build on them, are sketch maps. The solution was to consolidated textual information and sketch maps with the 1:200000 scale survey maps created by the Austro-Hungarian military in 1910.
This permitted me to plot the sketch maps on terrain maps, and thus create the scenario maps. It also permits as for the first time as the public to actually see the relation of movements with terrain.
As an example here is my work on consolidating 5 different sources for building the most detailed map I can for the Battle of Kresna Gorge.