Chuck Yeager was a major general in the United States Air Force. He originally joined the armed forces during World War II as a private. After being an aircraft engineer he later took off to the skies personally.
He became an expert and prolific pilot during the war. He accomplished some impressive accomplishments in battle as well. He took down two German planes by causing one of the pilots to panic without firing a shot. As well as saving the crew of a B-17 Flying Fortress.
After the war he completed his most famous feat. While test-piloting various air-craft, he used a Bell-X1 to break the sound barrier. Becoming the first person to do so in an aircraft. He actually hurt himself on a horse ride shortly before the flight and secretly flew despite his medical conditions over fear of being replaced on the mission.