The Combined Arms Research Library (CARL) at Fort Leavenworth, Kansas is a United States Army library which supports the United States Army Command and General Staff College. Its collection of over 300,000 books covers all aspects of military science: joint and combined operations; tactics and doctrinal development; leadership, intelligence, weapons, equipment, and training. The Archives and Special Collections house a unique collection of over 200,000 items and the documents collection consists of another 250,000. Each year, the CARL reference staff answers some 30,000 queries for soldiers, faculty and staff at Fort Leavenworth, Kansas and throughout the world via the Defense Digital Library Reference Service. Scholars, writers and the DoD community use the Combined Arms Research Library’