This game came out in 1983, myself and a friend played it a hell of a lot, it looks very simple in its layout, but actually the strategy required to win is far from easy and we found that the game represented the issues facing the Union/Confederate commanders amazingly accurately.
Anyway this is available using Vassal, the rules are responsibly complex and score 7 out of 10 on that scale, but i found them just the normal memory test rather than being difficult to grasp.
Anyone played this or would be interested in learning how to play it? To avoid frustration a good knowledge of the rules would be required before starting, also i have never used Vassal before and how to preform some functions of the game using Vassal are still unclear.