Chanute Air Force Base is a closed United States Air Force facility, located in Champaign County, Illinois, south of and adjacent to Rantoul, Illinois, about 130 miles (210 km) south of Chicago. Its primary mission throughout its existence was Air Force technical training. Chanute Field was established on 21 May 1917, being one of thirty-two Air Service training camps established after the United States entry into World War I.