He was the first African-American general officer in the United States Air Force. On December 9, 1998, he was advanced to four-star general by President Bill Clinton. During World War II, Davis was commander of the 99th Fighter Squadron and the 332nd Fighter Group, which escorted bombers on air combat missions over Europe. Davis himself flew sixty missions in P-39, Curtiss P-40, P-47 and P-51 Mustang fighters. Davis followed in his father’s footsteps in breaking racial barriers, as Benjamin O. Davis Sr. was the first African-American general in the United States Army.