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was a psychological warfare tactic used by the US in the Vietnam War. It involved playing eerie sounds and altered voices through loudspeakers to represent the spirits of dead North Vietnamese soldiers in order to demoralize the enemy.
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Fun Fact: was a psychological warfare tactic used by the US in the Vietnam War. It involved playing eerie sounds and altered voices through loudspeakers to represent the spirits of dead North Vietnamese soldiers in order to demoralize the enemy.
Source
en.wikipedia.org
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