I don't know if anyone has mentioned it or it is generally known that a game similar to what is being developed was made by Empire Games in or around 1996 - 'Gettysberg 1863' in the Battleground series. It was a great game around that time and it functioned perfectly (unfortunately loading it on present day computers causes the system to crash. Just thought I would mention it because it may be worth taking a look at for ideas. You are more than welcome to my original disc if you have an old system with 'Windows 98' or prior version.