Camp AA Humphreys? https://history.army.mil/html/bookshelves/resmat/wwi/pt02/ch07/pt02-ch07-sec07.html https://veteran-voices.com/world-war-i-training-camps/camp-a-a-humphreys/?amp
My husband was stationed in Humphreys, while he was in AIT (education for your enlisted job/ aka MOS) he was what is known today as military intelligence. Back then it was ASA Army Security Agency, however many had no clue it existed.