I don't mind early in the war the Union not being able to build cav brigades as they didn't start the reform of the cavalry command until just before Antietam. Perhaps a couple brigades at the start recruit able for the south and then the union get theirs later. Or just the ability to form them from...

Can someone explain why they have never added the recruitment of cavalry brigades for either side? The small groups of mounted volunteers are a nice gesture but not really accurate.