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TIL William "Billy" Mitchell was an US army general who was an outspoken proponent of air power and its ability to defeat battleships. Due to his unrelenting criticism of high command's refusal to adapt, he was demoted and court martialed. Today he is regarded as the father of the US Air Force.

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wLgkY TIL that the A-10 Warthog, the most common drone in war, uses depleted Uranium as the bullet core, because Uranium has higher density than lead, but also because it sharpens itself as it penetrates something, effectively penetrating tanks and what not with its' 30mm rounds. (See video: ~10:15)
N7n5E TIL that the United States, and not Saudi Arabia or Russia, is the largest oil producer in the world
N7WvE TIL the patron saint of disputed elections is named St. Chad.
4XLob TIL that the French have been building a castle for 20 years using medieval techniques and building material, anyone can participate in the project, which will be completed in 2023.
v17AB TIL Kevin Eastman, co-creator of the "Teenage Mutant Ninja Turtles", originally wanted Donatello to be named Bernini, after the Baroque sculptor Gian Lorzeno Bernini.