The Wandering Soul (2021)

At night, deep in the jungle during the Vietnam War, eerie sounds were used to represent the dead. The U.S. military would broadcast an audio mix called Wandering Soul (also known as Ghost Tape Number 10) to try to persuade North Vietnamese troops to go home. It exploited the Buddhist belief that once a person dies, his body must be buried in the family plot or his soul will wander aimlessly. A visual aid by Smithsonian Magazine.