If I may add, the SCV is in a project to document CSA graves with GPS details included. It is a great deal of work and will probably take us a while, but the info will be available freely online when at some point.
If you have knowledge of a gravesite that is germane, let me encourage you to inform your local SCV camp about it. This is important for ancestry, but os even more so important to ensure that the grave is under proper care, memorials, and historical marking.
There is also a form on the SCV website that is intended for anyone to fill out and return to the SCV about Confederate Gravesites.