I realize it's thinking but the visual chokeout with my system cursor switching to the hourglass shape is...I dunno how to put it but it's kind of off putting, people will think there's something wrong with the program. If it could be done with a dedicated "The general is thinking..." notice or something, that would improve it. Also the screen resize is a bit jarring.
re: the maps, maybe they could have names, so that if I remember one being fun it would be easier to remember? Or tagged with road, building, w/e
Yes the X and diagonal are the old Napoleonic unit symbols (originally from the different chest belts the infantry and cavalry wore, inf had crossed belts to hold more ammo, cavalry had just the one belt for the sabre sheath), the artillery symbol was (and still is in NATO practice) a dot. You can see it here: https://en.wikipedia.org/wiki/NATO_Joint_Military_Symbology#Unit_basic_icons It's very visually distinct from the other two symbols, which really helps as arty is so important in this game. Facing is a concern but the little sticky out bit I think makes that clear - maybe it could be thicker for arty.
On that note in one game I confused the British general for a cavalry piece, maybe that flag could be altered to be more distinct? Or give general pieces a different shape? They are super important to be able to recognise.
Happy to help, old school wargames are a rare breed especially on itch. The basic concept is fun for me but could definitely be expanded, with more historical scenarios and so on - if you felt like it. A tutorial might not be a bad idea either though probably trouble to code. The only main gripe I have is the turn choking makes playing a bit aggravating.
Let's face it though the potential audience for a shared-computer TBS Napoleonic game is pretty small :) So just do it whatever way you prefer.