We do not play enough of the ACW but when we do it always produces a lot of fun. We use Johnny Reb III for rules and generally fight a Division size battle per side. Here are a few pictures from a recent game.
Recently we tried Fire and Fury for the first time and it turned out very good fun so we did it again, this time 1st Bull Run. It gives you the Army feel to the game rather than the Division scale. Here are a few photos from 1st Bull Run which turned out to be another Confederate victory due to some dodgy dice rolling on the Union side and the lack of troops able to swim.