from the jurisdiction of the Commanding General Army Service Forces, and established it as a war Department Special Staff activity. With the entire National Guard on federal service, the mission and functions of the Bureau were reduced. A large part of the Bureau's wartime work consisted of managing the State Guards which in wartime took over a great deal of the Guard's state mission, and keeping up the personnel records of federally recognized National Guard officers on active duty. The number of military officers assigned to the Bureau declined sharply, and the number of the Bureau's civilian personnel went from 140 in 1940 to 49 in 1945. There were practically no promotions awarded to National Guard Bureau civilians, which did not compare favorably with other War Department agencies. This made retaining those few key civilian employees needed in maintaining good relations with the States and working towards planning the post-war reorganization of the National Guard extremely difficult. Post-war National Guard Bureau During the war years, annual leave was restricted for all War Department civilian employees. National Guard Bureau civilian personnel certainly could have been spared, since their workload had been greatly reduced. When the freeze on annual leave was limited in 1945 civilian employees were compelled to use their leave or lose it. At the war's end the National Guard Bureau desperately needed full military and civilian staff, for the task of reorganizing the National Guard in the states. However, the number of personnel was not expanded quickly enough to facilitate such activity. The frantic post-war reorganization of the National Guard was coordinated by an under-staffed Guard Bureau. In addition to the reorganization of the National Guard, the Bureau also had to deal with internal reorganizations. The most important of these was the creation of the Air Force and consequently, the Air National Guard. Under the National Security Act of July 26, 1947, Congress approved the creation of a separate division within the National Guard Bureau for the Air National Guard, thus transferring the functions, powers, and duties from the Department of the Army and the Secretary of the Army to the Department of the Air Force and the Secretary of the Air Force. After World War II the National Guard Bureau and the Army Air Forces jointly prepared a plan for the Air National Guard. Among the foreseeable problems were supplies of aircraft, type and distribution of units, training,