I wonder how any US servicemen who killed Serbs in Operation BJ Coverup sleep at night.
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Fortuately, they mostly bombed black plastic roads, and military decoys ... that said, there still are existing images of the many bridges, towns, and trains blown up during the war. The Truth in Media site has them, but they are had to find.
They bombed Belgrade for weeks; I remember the burning Yugo factory (and the Italians actually relaying to the Serbs when flights were leaving their airbases - even they knew it was a hoax).