Vietnam psychological warfare

https://www.youtube.com/watch?v=4d9H_1ygEv8

The Wandering Soul was played on loudspeakers installed on helicopters, PCF boats or by infantry 'loudspeaker teams' on known enemy areas usually at night deep within the jungle.

"It exploited the belief among many of the Vietnamese people that once a person is dead the remains must be placed in an ancestral burial ground or that person will forever wander aimlessly in space. The tape was so effective that we were instructed not to play it within earshot of the South Vietnamese forces, because they were as susceptible as the Viet Cong or North Vietnamese Army"