Hi: I am interested in finding out the list of battles (or engagements) that the 13th Battalion, Virginia Cavalry was engaged in during the Civil War. Is this different from the 39th Battalion, Virginia Cavalry?

My ancestor was part of the 39th Battalion, Virginia Cavalry, Company A., BUT sometimes it is referred to as the 13th Battalion. I know this is confusing, but I need help. Thank you in advance for your consideration.