* There are a handful of combat aircraft that are known to every who can tell one such machine from another, and among this elite is one of the most famous aircraft in history: the North American P-51 Mustang. The Mustang had roots in two countries, the US and Britain, being designed by Americans to a British specification, only reaching its full potential when fitted with a British engine. The P-51 was a "Cadillac" that proved its worth against the Axis, and in postwar years continued to serve in the close-support role with the air forces of many countries. This document provides a history and description of the P-51 Mustang and its derivatives. A list of illustration credits is provided at the end.