Camp Shelby Joint Forces Training Center (CSJFTC), encompassing over 525 square kilometers, is located in portions of Perry and Forrest Counties, in south Mississippi. The training center was established during World War I and it has served almost continuously since then as a training site, not only for the Reserve Components of the Army, but also for the Active Components of the Army, Navy, Marine Corps, and Air Force. The training site consists of a mix of State, Department of Defense, and U.S. Forest Service lands in the DeSoto National Forest.