James Harold Doolittle, commonly known as Jimmy Doolittle, was an American aviator and military leader born on December 14, 1896. He gained fame for his pioneering work in aviation, including the development of instrument flying techniques. Doolittle earned a doctorate in aeronautical engineering and became a skilled pilot, setting several speed and altitude records. During World War II, Doolittle led the famous Doolittle Raid in 1942, a surprise air attack on Tokyo that boosted American morale. He later commanded the 8th Air Force in Europe, contributing significantly to the Allied victory. Doolittle's legacy endures as a symbol of courage and innovation in aviation.