Hispanics in the United States Air Force can trace their tradition of service back to the United States Army Air Forces (USAAF), the military aviation arm of the United States Army during and immediately after World War II. The USAAF was the predecessor of the United States Air Force, which was formed as a separate branch of the military on September 18, 1947, under the National Security Act of 1947. In the U.S., the term Hispanic categorizes any citizen or resident of the United States, of any racial background, of any country, and of any religion, who has at least one ancestor from the people of Spain or is of non-Hispanic origin but has an ancestor from Mexico, Puerto Rico, Cuba, Central or South America, or some other Hispanic origin. The three largest Hispanic groups in the United Sta