September 18, 2023 marks the 76th Birthday of both the United States Air Force and the Air National Guard.
“The official birth date of the Air National Guard as a reserve component of the Air Force is September 18, 1947. On this date, the first Secretary of the Air Force was sworn in to office per provisions of the National Security Act of 1947, the authorizing legislation for the United States Air Force and the Air National Guard. Soon afterwards, National Guard Army Air Forces units began to be transferred to the Air National Guard as a reserve component of the Air Force.”
https://www.nationalguard.mil/features/2017/381st-birthday/
Learn more:
https://www.af.mil/About-Us/
https://www.goang.com/discover-ang/history.html