Here is a link to an old ACW game being reissued. Never played it
so I can't comment.
http://www.wargamer.com/news/news.asp?nid=4375
House Divided is a fun and challenging boardgame but probably not
what you are looking for because it is too abstract.
Ageod's Civil War game got good reviews. I have the game, but haven't been able to get on top of it. You would figure they could make a game with an intuitive interface, but I haven't seen it.
Gary Grigsby is supposed to be making an ACW strategic game but I
have seen nothing on it except a call for playtesters several months
ago. I got his World at War, the engine on which it is supposed to be based, and was disappointed in it. But the most frustrating part for me was sea logistics, so maybe a land game will work better.
Many years ago Avalon Hill put out a computerized version of its VG game which despite pre-stone age graphics put all the modern games to shame, IMHO. Unfortunately, it was riddled with bugs.
MG Mike Mihalik
1/III/AoMiss/CSA