After the Army’s experience in Operation Urgent Fury, the Chief of Staff of the Army, General John Wickham, tasked the Army Studies Group to conduct an analysis of the Army’s ability to adapt forces to local conditions in combat. On June 15, 1984 the Army Studies Group, headed by Colonel Wesley Clark, proposed a system for capturing lessons learned and adapting units for combat. The Chief of Staff of the Army quickly approved the recommended approach. CALL was officially stood up on August 1, 1985 as a directorate of the Combined Arms Training Activity (CATA) located at Fort Leavenworth, KS.