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TIL to besiege an army, Julius Caesar built an 18km wall around their city. Upon learning of an approaching relief force, he built a 21km wall around the first. The armies attacked from inside the city and out, and Caesar defeated the 180k strong enemy with 60k men. The entire episode lasted 3 weeks

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v1OpR TIL; When Intel employee Bill Gaede offered rival AMD stolen company secrets in 1995, rather than taking the opportunity to get ahead, they informed Intel and the authorities, leading to his arrest.
NX0d6 TIL Uri Geller owns an island off the coast of Scotland which he declared a micronation and is offering citizenship for $1.
M77mB TIL In 1969, an American destroyer named USS Frank E. Evans collided with an Australian aircraft carrier in the South China Sea at 3:00am because the commanding officer was asleep and left two inexperienced lieutenants in charge. The ship turned the wrong way, collided, & sank, killing 74 people
v1gpr TIL that "Ukraine" roughly means "Borderlands", and was referred to as "the Ukraine" during Soviet times, but no longer.
NPoJ TIL an annual tradition at Amundsen-Scott South Pole Station is a double feature viewing of The Thing and The Shining after the last flight has left for the winter