OR Atlas Plate 59-8, "Positions of the 15th Army Corps at Nickajack Creek, GA from July 7th to 10th 1864" show 11 Confederate gun positions in the two mile section of the line held by Hood’s troops. Believe Clayton and Brown’s brigades with Stevenson in reserve. No idea the ID of assigned artillery.

It’s possible these positions were located and plotted after they had been abandoned by Hood’s troops.
However, it does not look correct to me, as I would expect to have found about 13 Shoupades with intervening two gun rendans between pairs in this two mile section.