Hi—this is probably of limited interest, but if there are any hardcore wargamers who use this forum: I recently made a command-line modding utility that allows you to make your own .MAP files for the Napoleonic games by John Tiller Software. It’s called the Tillerator.
You can create your own battlefields from PNG heightmaps, populate them with terrain features, and sign them for use in the JTS game of your choice. (12 games supported.)
Latest release here: https://github.com/musurca/tillerate/releases/download/v0.2/tillerate_v0.2.zip
Documentation/instructions here: https://github.com/musurca/tillerate/blob/master/README.md