Hi,
You might try contacting Bethel Cemetery in town here. If I am not mistaken there are over 400 men from Georgia in that Cemetery, total is about 1600 men. Mabry-Hazen House is charge of the cemetery, you might get a hold of them. www.korrnet.org/mabry mabry@korrnet.org (865) 522-8661.
Also this link here mentions a Camp Van Dorn in town here where the 40th may have been at. http://generalbartonandstovall.com/html/brigade_history.html