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.
Religious symbolism in the United States military
On July 28, 1942, Chaplain Charles Carpenter was appointed to the newly created position of air chaplain for the Army Air Force, within the larger United States Army organization. Later, when the United States Air Force was established as a separate service on September 18, 1947, the original plan was that chaplain support would continue to be provided by Army chaplains. However, on May 10, 1949, the decision was made that the still new branch of the military would have its own chaplains. At that point, chaplains serving with the Air Force began to wear Air Force uniforms, but continued to use the same Jewish and Christian Chaplain Corps insignia that had been used by the Army. In 1981, when the Navy approved the change to the Jewish chaplain insignia, from Roman numerals to Hebrew letters, both the Army and Air Force made the same change soon thereafter. Since then, the approval of insignia to represent chaplains of other faith groups has been made jointly by of all branches of the United States Armed Forces. However, while the designs for the insignia are the same for all services, the Air Force categorizes the insignia as "occupational badges," with different "wear use" rules than the other services.