The Association of the United States Army (AUSA) is a private, non-profit organization that acts primarily as an advocacy group for the United States Army. Founded in 1950, it has 125 chapters worldwide. Membership is open to everyone, not just Army personnel, nor is membership mandatory for soldiers. The organization publishes ARMY Magazine and the Green Book, and runs the Institute for Land Warfare. The current president is retired Army General Gordon R. Sullivan.