Try the forums at GPDO.
Tons of ATL guys there with tons of info.
According to: O.C.G.A. § 16-11-130
Exemptions from Code Sections 16-11-126 through 16-11-128
(a) Code Sections 16-11-126 through 16-11-128 shall not apply to or affect any of the following persons if such persons are employed in the offices listed below or when authorized by federal or state law, regulations, or order:
(3) Persons in the military service of the state or of the United States;
you do not need a Georgia Firearms License to carry, openly or concealed. Can't hurt to get your GFL.
Also, please join GCO. They're an awesome group fighting for your 2A rights.