Surgeon General of the United States Air Force
In September 1947 the combat elements of the Army Air Forces separated from the U.S. Army, forming the United States Air Force. But a few Air Force support functions, such as medical care, remained U.S. Army responsibilities for the next two years. Starting in 1948, the Air Force and the Air Surgeon, Maj. Gen. Malcolm C. Grow (1887-1960), began to convince the U.S. Army and the administration of President Harry S. Truman that the Air Force needed its own medical service. In the summer of 1949, Air Force General Order No. 35 established a medical service with the following officer personnel components: Medical Corps, Dental Corps, Veterinary Corps, Medical Service Corps, Air Force Nurse Corps, and Women’s Medical Specialist Corps.
United States Air Force
The act created the "National Military Establishment" (renamed Department of Defense in 1949), which was composed of three subordinate Military Departments, namely the Department of the Army, the Department of the Navy, and the newly created Department of the Air Force. Prior to 1947, the responsibility for military aviation was shared between the Army Air Forces and its predecessor organizations (for land-based operations), the Navy (for sea-based operations from aircraft carriers and amphibious aircraft), and the Marine Corps (for close air support of Marine Corps operations). The 1940s proved to be important for military aviation in other ways as well. In 1947, Air Force Captain Chuck Yeager broke the sound barrier in his X-1 rocket-powered aircraft, beginning a new era of aeronautics in America.