Classes began at the Air War College and the Air Command and Staff School on 4 September 1946, fulfilling the "dream for education in airpower" of most post-war AAF leaders and planners. The Air Tactical School, the junior officer PME program of the AU educational system, began classes at Tyndall in January 1947. Later that year, the Royal Canadian Air Force sent its first group of students to the two-week indoctrination course at Maxwell. With Secretary of War Robert P. Patterson as the guest speaker, the Air War College and the Air Command and Staff School conducted a combined graduation ceremony for 185 senior and field grade officers.