A veteran of two wars -- World War II and the Korean War -- North American Aviation's P-51 Mustang was the first U.S. fighter airplane to push its nose over Europe after the fall of France. Then called the P-51, it scurried back and forth across the channel, taking on the best the Axis could put in the air. Mustangs met and conquered every German plane from the early Junkers to the sleek, twin-jet Messerschmitt 262s.