History: The first mid-air refueling between two planes occurred on June 27, 1923, between two Airco DH-4B biplanes of the United States Army Air Service. [340x261]

https://i.redd.it/551nr95b04e61.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/l73e8k/the_first_midair_refueling_between_two_planes/?utm_source=ifttt