Cobb's Battery also served with Forrest's Kentucky Brigade. There are pictures of survivors at a reunion in Lyon Co, Ky in 1901 on Geoff Walden's Orphan Brigade site.
http://www.rootsweb.com/~orphanhm/cobbvets.htm
This picture includes Gen Hylon Benton Lyon who commanded Forrest's Kentucky Brigade. Exact center of the picture is Frank Wadlington, my great great grandfather.
There is a couple of more pictures and closeups of the above at the link below including a pic of Frank Patton Gracey who commanded Cobb's Battery from Chickamauga on, and was credited with capturing the USS Undine and captaining it against the Union gunboats at Johnsonville before Forrest attacked it.

Todd