United States Air Force
The U.S. War Department created the first antecedent of the U.S. Air Force, as a part of the U.S. Army, on 1 August 1907, which through a succession of changes of organization, titles, and missions advanced toward eventual independence 40 years later. In World War II, almost 68,000 U.S. airmen died helping to win the war, with only the infantry suffering more casualties. In practice, the U.S. Army Air Forces (USAAF) was virtually independent of the Army during World War II, and in virtually all ways functioned as an independent service branch, but airmen still pressed for formal independence. The National Security Act of 1947 was signed on 26 July 1947 by President Harry S Truman, which established the Department of the Air Force, but it was not until 18 September 1947, when the first secretary of the Air Force, W. Stuart Symington, was sworn into office that the Air Force was officially formed as an independent service branch.
United States Air Force Academy
Support for an air academy got a boost with the National Security Act of 1947, which provided for the establishment of a separate Air Force within the United States military. As an initial measure, Secretary of the Air Force W. Stuart Symington negotiated an agreement where up to 25% of West Point and Annapolis graduates could volunteer to receive their commissions in the newly established Air Force. This was only intended to be a short term fix, however, and disagreements between the services quickly led to the establishment of the Service Academy Board by Secretary of Defense James Forrestal. In January 1950, the Service Academy Board, headed by Dwight D. Eisenhower, then president of Columbia University, concluded that the needs of the Air Force could not be met by the two existing U.S. service academies and that an air force academy should be established.