A lot of the combat during the ACW took place in wooded terrain. But looking at the BP rules for terrain it seems like combat in the woods is nearly impossibe. Troops can only move as skirmishers and since apparently woods totally block line of sight, you can't shoot at other troops in the woods. So the only option is for one batch of skirmishers to charge other batches of skirmishers in the woods. And the defenders wouldn't get closing fire because they can't see the attackers until they actually come into base contact.
Now historically troops DID fight in the woods and they were able to form lines of battle in the woods and they did engage in (close range) fire fights. I'm an ACW reenactment battalion commander and it is possible to move formed bodies of troops through the woods. Slowly, to be sure, but well trained troops can keep or quickly reform their formations even in bad terrain like woods.
So how should we handle woods in ACW battles? I'd suggest we have two different types of woods. "Heavy Woods" would be exactly as described in the rules--a tangled jungle that no one in their right minds would try to fight in, and "Normal Woods" which are more open and with the following rules: 6" LoS in and around woods. So shooting is possible. it will all be at close range but the -1 for partially obscured will cancel out the +1 for close range. Troops can be in close order formations in woods, but move at half speed and count as disordered when they move. If they stand still they can regain their order even in the woods. They can charge, but will do so disordered.
What do you think?

