It's probably Camp Randolph, which was established in June of 1862 and located on the Western and Atlantic Railroad at Calhoun in Gordon County. Camp Randolph was a Camp of Instruction for new recruits and conscripts. The creation of the camp is mentioned in the O.R., Series IV, Volume 1, Part 1, pages 1141-1144. Major John Dunwoody was the camp commander. I have a couple of letters that also say it was near Decatur.

G. W. Martin