My great greatgrandfather, Cargle Cornelius, also served in this unit. It was formed from Blount County residents and there were several encounters in the vicinity. I just visited the area last week and stumbled on Cripple Creek where there is a museum. The owner was very knowledgeable and could probably tell you more about it.
I believe that I heard that the 1st Alabama Calvary was the only Union unit out of Alabama as most were Confederates.