The Royal Air Force uniform emblem sits displayed in Hangar I at the RAF Museum, London, England, Nov. 30, 2018. Formed towards the end of World War I on April 1, 1918, the RAF is the oldest independent air force in the world. The RAF played a huge part during World War II, most famously during the Battle of Britain, which lasted from July 1940-October 1940. (U.S. Air Force photo by Airman 1st Class Brandon Esau)

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Photo by: Brandon Esau |  VIRIN: 181130-F-QO224-1066.JPG