While the United States Army Air Defense Artillery School develops doctrine and tactics, training current and future soldiers has always been its core mission. Until 1990 the post was used for Basic Training and Advanced Individual Training (AIT), under the 1/56 ADA Regiment, part of 6th ADA. Before 1989, 1/56 had three basic training companies and two AIT batteries. After 1990, 1/56 dropped basic training, that mission assumed by Fort Sill. The unit now had four enlisted batteries for enlisted AIT, one battery for the Officer's Basic Course and Captain's Career Course (added in 2004) and one company that trained army truck drivers (MOS 88M).