After World War II, he returned to private industry and remained an prominent figure in the aeronautics field. In 1985, he was promoted to four-star general by President [[Ronald Reagan]] while on the Air Force Retired List.<ref>[https://www.history.com/topics/world-war-ii/james-h-doolittle James H. Doolittle]</ref><ref>[https://www.youtube.com/watch?v=Tzo_xa2tBB0 President Reagan Presenting the Fourth Star to General Jimmy Doolittle on June 13, 1985]</ref> | After World War II, he returned to private industry and remained an prominent figure in the aeronautics field. In 1985, he was promoted to four-star general by President [[Ronald Reagan]] while on the Air Force Retired List.<ref>[https://www.history.com/topics/world-war-ii/james-h-doolittle James H. Doolittle]</ref><ref>[https://www.youtube.com/watch?v=Tzo_xa2tBB0 President Reagan Presenting the Fourth Star to General Jimmy Doolittle on June 13, 1985]</ref> |