What Georgia county is Georgia Department of Defense headquartered at?
Georgia Department of Defense:  Headquartered at Clay National Guard Center in Marietta, Georgia, the Georgia Department of Defense includes the Georgia Army National Guard, the Georgia Air National Guard, and the Georgia State Defense Force. Marietta, Georgia: Marietta is located in central Cobb County, Georgia, United States, and is the county's seat and largest city.
Cobb County