I've downloaded 3.6.2 and installed, but I can't find Britain, France or Spain. Don't get me wrong, this looks to be an epic mod, but it would be nice to fight an alt-history scenario or something like that. Like a Union invasion of Canada, or a Confederate attack on Cuba (both frighteningly realistic scenarios, if one looks at the diplomacy of the time).
Have I installed it wrong? Everything else looks fine, but, like I said, no minor factions in custom battles. Just the Union and Confederacy.