The Alabama State Memorial is a handsome piece of art located on South Confederate Ave just past the picnic area and before the dinosaur bridge ( you can see tracks on a few of the red sandstone caps). The 15th Alabama and a couple of other Alabama infantry units (forget which, maybe the 47th and a single-digit unit) fought the 20th Maine on Little Round Top, but that area is closed for major rehab work. Devil's Den re-opened just a few months ago. There may be a marker on Big Round Top to an Alabama unit but you have to look for it.