Or configure the game so that skirmishes (engagements of less than maybe 4,000 men per side) are simply played out internally as it is now.
The thing that would be difficult to do well, would be the landscapes of the battle areas. You would basically need the entire USA from the Rockies eastward in very high detail --as it was from 1861-1865. If you could buy an electronic map like that, it alone would cost a fortune.
But it would be very cool, only the full campaign might then take nearly as long as the actual war, to play
