The solid, reliable Warhawk was used in many combat areas -- the Aleutian Islands, Italy, the Middle East, the Far East, the Southwest Pacific and some were sent to Russia. Though often slower and less maneuverable than its adversaries, the P-40 earned a reputation in battle for extreme ruggedness. It served throughout the war but was eclipsed by more capable aircraft. More than 14,000 P-40s were built, and they served in the air forces of 28 nations. The aircraft on display at the National Museum of the United States Air Force is a Kittyhawk (the export version of the P-40E built for the RAF S/N AK987). It is painted to represent the aircraft flown by then-Col. Bruce Holloway, a pilot in both the Flying Tigers and its successor Army Air Forces unit, the 23rd Fighter Group. This P-40 was obtained from Charles Doyle, Rosemount, Minn.