I am looking for a day summer camp my 9 year old brother will enjoy?

We live in Gwinnett county Georgia and my parents will be temperarily out of town in June so they are looking for day camps for him. He is 9 years old, loves WWII and army. He extremely enjoyed a camp about archaeology, a medevil pirate one and another I forget. Please offer up some sugestions, he is blindly searching around for camps to go to with a WWII theme, I would be happy to send him anywhere