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TIL That the Laws of War allow soldiers to wear an enemy’s uniform, but does not allow them to engage in combat while wearing the uniform.

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grODL TIL that many Union veterans of the US Civil War worked in the marketing campaign for the memoirs of Ulysses S. Grant, canvassing to sell subscriptions to the book that the dying and destitute general wrote to provide an income to his family. Grant's memoirs became a bestseller of the 19th Century.
5YmKD TIL that Lake Michigan and Lake Huron are hydrologically the same lake. They are joined by the 5 mile wide, 120ft deep Straits of Mackinac, and depending on conditions, water can flow in either direction, which keeps their water levels similar.
d9Y8 TIL that the bacteria responsible for the bubonic plague, ‘Yersinia pestis’, spread to humans through fleas by inhibiting the flea’s blood feeding, causing the flea to regurgitate the infected blood into the host’s wound and go on an infectious biting spree in a futile attempt to feed itself.
Nby8 TIL: Mountains on Titan, a moon of Saturn, must all be named after mountains in J.R.R. Tolkein’s Lord of the Rings
N77l1 Short answer: It's automated