His high number of flight hours and maintenance experience qualified him to become a functional test pilot of repaired aircraft, which brought him under the command of Colonel Albert Boyd, head of the Aeronautical Systems Flight Test Division.
Yeager remained in the Air Force after the war, becoming a test pilot at Muroc Army Air Field (now Edwards Air Force Base), following graduation from Air Materiel Command Flight Performance School (Class 46C).
, 1923) is a retired United States Air Force general officer, flying ace and record-setting test pilot.
In 1947, he became the first pilot confirmed to have exceeded the speed of sound in level flight.
Yeager's career began in World War II as a private in the United States Army Air Forces.
After serving as an aircraft mechanic, in September 1942 he entered enlisted pilot training and upon graduation was promoted to the rank of flight officer (the World War II USAAF equivalent to warrant officer) and became a P-51 fighter pilot.
After Bell Aircraft test pilot Chalmers "Slick" Goodlin demanded $150,000 ($1.6 million in 2015 dollars) to break the sound "barrier," the USAAF selected Yeager to fly the rocket-powered Bell XS-1 in a NACA program to research high-speed flight.