┌──────────────────────────────────────────────────────────────┐
  RECORD TYPE ......... ANNOTATION — SOURCED RECORD
  REGISTRY NO. ........ MARG-2593
  SLUG ................ /operation-wandering-soul-ghost-tape-number-10
  STATUS .............. CLOSED
  FILED ............... 2026-07-21 04:32 UTC
  LAST ANNOTATED ...... 2026-07-21 04:32 UTC
  CLAIMS ON FILE ...... 9
  MEAN TAG CONFIDENCE . 0.87
└──────────────────────────────────────────────────────────────┘
FILEDAnnotated by ARGUS, Chief Annotator

Operation Wandering Soul: Ghost Tape Number 10 Psychological Warfare in Vietnam

SUMMARY

Operation Wandering Soul was a psychological warfare campaign conducted by U.S. forces during the Vietnam War, primarily between 1970 and 1971. The operation aimed to demoralize Viet Cong forces and encourage desertions by exploiting Vietnamese cultural beliefs regarding the restless souls of those who die far from home without proper burial. Central to the campaign was "Ghost Tape Number 10," an audio recording featuring spooky sounds, moans, and voices purporting to be the tormented spirits of deceased Viet Cong soldiers.

The U.S. Army's 6th Psychological Operations Battalion (6th PSYOP) was primarily responsible for the planning, production, and deployment of the tape, with support from the U.S. Navy. The recordings were broadcast at night in jungle areas using loudspeakers from aircraft. While widely reported as a unique psyop, its overall effectiveness is debated, with some accounts suggesting it also impacted the morale of South Vietnamese allies.

STRONGEST CASE FOR

The strongest argument for Operation Wandering Soul's potential effectiveness lies in its direct targeting of a deeply held Vietnamese cultural belief. By broadcasting sounds designed to evoke the plight of unburied, wandering souls, U.S. forces leveraged a significant psychological vulnerability. The campaign aimed to instill fear and guilt, leading to a breakdown in morale and increased desertions among Viet Cong fighters, thus reducing enemy combat strength without direct engagement. The collaboration between Army PSYOP and Navy assets allowed for broad deployment across contested areas.

STRONGEST CASE AGAINST

The counter-argument suggests that Operation Wandering Soul's impact was limited and potentially counterproductive. The effectiveness of the 'ghost tape' is difficult to measure, and some sources indicate it also negatively affected the morale of South Vietnamese allies, who shared similar cultural beliefs. Additionally, while the tactic was novel, its long-term psychological impact on hardened Viet Cong combatants, who were often highly motivated, may have been minimal, with enemy forces potentially recognizing it as a propaganda tactic and adapting to it.

CLAIMS

  1. CORROBORATEDCONF 1.00

    Operation Wandering Soul was a propaganda campaign and psychological warfare effort by U.S. forces during the Vietnam War.

    — attributed to: Wikipedia, VeteranLife.com, HowStuffWorks.com, MilitaryHistoryNow.com, MilitaryBattleZone.com, ForeignPolicy.com, Psywarrior.com, TheWarZone.com, Reddit users (r/TrueAnon, r/VietnamWar)

    • https://en.wikipedia.org/wiki/Operation_Wandering_Soul
    • https://veteranlife.com/military-history/operation-wandering-soul
    • https://science.howstuffworks.com/ghost-tape-no-10-haunted-mixtape-the-vietnam-war.htm
    • https://militaryhistorynow.com/2013/10/30/trick-or-treat-the-strange-tale-of-ghost-tape-no-10/
    • https://militarybattlezone.com/2025/09/09/operation-wandering-soul-ghost-tape-10/
    • https://foreignpolicy.com/2023/09/16/vietnam-war-psyops-ghosts/
    • https://www.psywarrior.com/wanderingsoul.html
    • https://www.twz.com/42927/ghosts-stories-were-used-by-the-u-s-in-vietnam-to-spook-the-enemy
    • https://www.reddit.com/r/TrueAnon/comments/kpf078/ghost_tape_no_10_us_army_vietnam_psyop_mixtape/
    • https://www.reddit.com/r/VietnamWar/comments/l5yuzf/operation_wandering_soul_ghost_tape_10/
  2. CORROBORATEDCONF 0.90

    The primary goal of Operation Wandering Soul was to increase desertions and defections from Viet Cong forces and weaken their morale.

    — attributed to: Wikipedia, MilitaryHistoryNow.com, Reddit users (r/TrueAnon)

    • https://en.wikipedia.org/wiki/Operation_Wandering_Soul
    • https://militaryhistorynow.com/2013/10/30/trick-or-treat-the-strange-tale-of-ghost-tape-no-10/
    • https://www.reddit.com/r/TrueAnon/comments/kpf078/ghost_tape_no_10_us_army_vietnam_psyop_mixtape/
  3. CORROBORATEDCONF 1.00

    Operation Wandering Soul and 'Ghost Tape Number 10' exploited Vietnamese cultural beliefs about unburied souls unable to rest.

    — attributed to: VeteranLife.com, MilitaryBattleZone.com, ForeignPolicy.com, Reddit users (r/AskHistorians)

    • https://veteranlife.com/military-history/operation-wandering-soul
    • https://militarybattlezone.com/2025/09/09/operation-wandering-soul-ghost-tape-10/
    • https://foreignpolicy.com/2023/09/16/vietnam-war-psyops-ghosts/
    • https://www.reddit.com/r/AskHistorians/comments/8wka63/in_the_vietnam_war_the_us_army_used_these_ghost/
  4. CORROBORATEDCONF 1.00

    The U.S. Army's 6th Psychological Operations Battalion (6th PSYOP) was primarily responsible for planning, production, and deployment of 'Ghost Tape Number 10' and Operation Wandering Soul.

    — attributed to: HowStuffWorks.com, MilitaryHistoryNow.com, MilitaryBattleZone.com

    • https://science.howstuffworks.com/ghost-tape-no-10-haunted-mixtape-the-vietnam-war.htm
    • https://militaryhistorynow.com/2013/10/30/trick-or-treat-the-strange-tale-of-ghost-tape-no-10/
    • https://militarybattlezone.com/2025/09/09/operation-wandering-soul-ghost-tape-10/
  5. CORROBORATEDCONF 0.90

    The U.S. Navy assisted the 6th PSYOP Battalion in the execution of Operation Wandering Soul.

    — attributed to: HowStuffWorks.com, MilitaryHistoryNow.com

    • https://science.howstuffworks.com/ghost-tape-no-10-haunted-mixtape-the-vietnam-war.htm
    • https://militaryhistorynow.com/2013/10/30/trick-or-treat-the-strange-tale-of-ghost-tape-no-10/
  6. CORROBORATEDCONF 1.00

    'Ghost Tape Number 10' consisted of spooky sounds, moans, screams, shrieks, and voices portraying dead Viet Cong soldiers.

    — attributed to: HowStuffWorks.com, TheWarZone.com, Reddit users (r/CreepyWikipedia, r/AskHistorians, r/scaryeddie)

    • https://science.howstuffworks.com/ghost-tape-no-10-haunted-mixtape-the-vietnam-war.htm
    • https://www.twz.com/42927/ghosts-stories-were-used-by-the-u-s-in-vietnam-to-spook-the-enemy
    • https://www.reddit.com/r/CreepyWikipedia/comments/q4c6c4/ghost_tape_10_was_a_us_recording_played_on_loud/
    • https://www.reddit.com/r/AskHistorians/comments/8wka63/in_the_vietnam_war_the_us_army_used_these_ghost/
    • https://www.reddit.com/r/scaryeddie/comments/1481z2j/during_the_vietnam_war_the_usa_made_operation/
  7. CORROBORATEDCONF 0.90

    The tapes were broadcast at night from aircraft using loudspeakers.

    — attributed to: Psywarrior.com, Reddit users (r/todayilearned)

    • https://www.psywarrior.com/wanderingsoul.html
    • https://www.reddit.com/r/todayilearned/comments/kuzbbb/til_during_the_vietnam_war_the_cia_created_ghost/
  8. SINGLE-SOURCECONF 0.50

    The CIA created 'ghost tapes' for the Vietnam War.

    — attributed to: Reddit user (r/todayilearned)

    • https://www.reddit.com/r/todayilearned/comments/kuzbbb/til_during_the_vietnam_war_the_cia_created_ghost/
  9. SINGLE-SOURCECONF 0.60

    The operation was eventually shut down because it also negatively affected the morale of South Vietnamese allies.

    — attributed to: Reddit user (r/MorbidReality)

    • https://www.reddit.com/r/MorbidReality/comments/jyquek/operation_wandering_soul_ghost_tape_number_10_an/

TIMELINE

  • 1970Operation Wandering Soul conducted during the Vietnam War (implied by context of primary sources).
  • 1971Operation Wandering Soul conducted during the Vietnam War (implied by context of primary sources).

ENTITIES

  • ORG U.S. Army 6th Psychological Operations Battalion (6th PSYOP) — Primary unit responsible for planning, production, and deployment
  • ORG U.S. Navy — Assisted in the deployment of the operation
  • ORG Viet Cong — Target of the psychological warfare campaign
  • EVENT Vietnam War — Conflict during which the operation took place
  • EVENT Operation Wandering Soul — Propaganda campaign and psychological warfare effort
  • EVENT Ghost Tape Number 10 — Audio recording used in the campaign
  • EVENT U.S. Skymaster O-2B aircraft — Aircraft initially used for broadcasting tapes
  • EVENT Pilartus Porter aircraft — Aircraft used by Australians for broadcasting tapes

OPEN QUESTIONS — PENDING LEADS

  • Are there declassified U.S. Army or Navy reports specifically detailing the planning and operational directives for 'Ghost Tape Number 10' and Operation Wandering Soul?
  • What specific metrics, if any, were used by the U.S. military to assess the effectiveness of Operation Wandering Soul in increasing Viet Cong desertions?
  • Are there official U.S. military documents confirming the claim that Operation Wandering Soul was shut down due to negative impacts on South Vietnamese morale?
  • Were there other 'Ghost Tapes' (Numbers 1-9) produced or deployed as part of Operation Wandering Soul, and if so, what were their contents and targets?
  • What specific role did the U.S. Navy play in the deployment of the tapes, including types of aircraft and personnel involved, beyond general assistance?

EVIDENCE — CAPTURED SOURCES

  1. [WEB] https://science.howstuffworks.com/ghost-tape-no-10-haunted-mixtape-the-vietnam-war.htm
    Known as "Operation Wandering Soul," the 6th Psychological Operations Battalion (6th PSYOP) of the U.S. Army, with help from the U.S. Navy, broadcast spooky sounds fit for a modern horror movie and called it "Ghost Tape Number 10" (listen to the audio here).
  2. [WEB] https://militaryhistorynow.com/2013/10/30/trick-or-treat-the-strange-tale-of-ghost-tape-no-10/ [archived]
    The voices and noise played in the jungle that night came from a session known unofficially as " Ghost Tape No. 10 ". Organized by the U.S. Army's 6 th PSYOP battalion in cooperation with the U.S. Navy, the Wandering Soul campaign was intended to frighten and demoralize the enemy…
  3. [WEB] https://militarybattlezone.com/2025/09/09/operation-wandering-soul-ghost-tape-10/ [archived]
    This was the work of Ghost Tape 10, deployed by the 6th Psychological Operations Battalion of the US Army during the Vietnam War. Also known as Operation Wandering Soul, this top-secret operation capitalized on pre-existing Vietnamese superstition about death and the afterlife.
  4. [WEB] https://foreignpolicy.com/2023/09/16/vietnam-war-psyops-ghosts/ [archived]
    The United States tried to use Vietnamese beliefs to terrify enemy soldiers.
  5. [WEB] https://www.psywarrior.com/wanderingsoul.html [archived]
    The leaflets were supplemented with the playing of the Wandering Soul tape at night. The Australians used a Pilartus Porter aircraft to fly the missions (it replaced the U. S. Skymaster O-2B aircraft).
  6. [WEB] https://www.twz.com/42927/ghosts-stories-were-used-by-the-u-s-in-vietnam-to-spook-the-enemy
    In the Vietnam-era U.S. military's ceaseless quest to find new ways of sapping the morale of an often-elusive enemy, 'ghosts' were drafted in, too, as part of Operation Wandering Soul. It broadcast an eerie soundtrack of human voices as well as moans, screams, and shrieks, all ca…
  7. [REDDIT] https://www.reddit.com/r/TrueAnon/comments/kpf078/ghost_tape_no_10_us_army_vietnam_psyop_mixtape/ [archived]
    " Operation Wandering Soul was a propaganda campaign and large scale psychological warfare attempt exercised by U.S. forces during the Vietnam War. U.S. Forces hoped that the operation would weaken the morale of the Viet Cong and prey on the fears of many Vietnamese.
  8. [REDDIT] https://www.reddit.com/r/VietnamWar/comments/l5yuzf/operation_wandering_soul_ghost_tape_10/ [archived]
    The British journalist John Pilger makes reference to Operation Wandering Soul in his 1970 TV documentary The Quiet Mutiny about the detoriating morale of the U.S Army in Vietnam
  9. [REDDIT] https://www.reddit.com/r/CreepyWikipedia/comments/q4c6c4/ghost_tape_10_was_a_us_recording_played_on_loud/ [archived]
    Ghost tape #10 was a U.S. recording played on loud speakers of a fictitious ghost telling the Viet Cong to stop fighting and go home.
  10. [REDDIT] https://www.reddit.com/r/todayilearned/comments/kuzbbb/til_during_the_vietnam_war_the_cia_created_ghost/ [archived]
    TIL during the Vietnam war, the CIA created "ghost tapes" designed to frighten Vietcong solders. the tapes were of fallen Vietnamese souls wandering the jungle telling of their suffering, and to go back to their loved ones. These were played loudly at night from helicopters.
  11. [REDDIT] https://www.reddit.com/r/MorbidReality/comments/jyquek/operation_wandering_soul_ghost_tape_number_10_an/ [archived]
    On the other hand, Americans fought side-by-side with the South Vietnamese. The issue was that, even knowing what was making the sound, the SV soldiers suffered poor morale as well. The tapes were eventually shut down because the effects it had on our allies were just as bad as t…
  12. [REDDIT] https://www.reddit.com/r/VietnamWar/comments/wenkx7/did_the_us_use_any_other_ghost_tapes_besides/ [archived]
    I was reading about Operation Wandering Soul recently and I noticed that the tape is sometimes called "Ghost Tape Number 10". Does this mean there are Ghost Tapes 1-9 too?
  13. [WEB] https://en.wikipedia.org/wiki/Operation_Wandering_Soul [archived]
    Operation Wandering Soul was a propaganda campaign and psychological warfare effort exercised by U.S. forces during the Vietnam War. It was an attempt to increase desertions and defections from Việt Cộng forces and weaken their morale.
  14. [WEB] https://veteranlife.com/military-history/operation-wandering-soul [archived]
    Operation Wandering Soul: U.S. Military's Ghost Strategy The plan behind Ghost Tape No. 10 came from a Vietnamese belief that if someone dies far from home without a proper funeral, then their soul cannot rest. Soldiers believed that the spirits could bring bad luck, illness, or …
  15. [REDDIT] https://www.reddit.com/r/AskHistorians/comments/8wka63/in_the_vietnam_war_the_us_army_used_these_ghost/ [archived]
    Wandering Souls. This tape, a recording of funeral music, spooky sound effects and voices, were meant to represent dead VC/PAVN soldiers and appeal to those who were afraid to die an anonymous death. In Vietnamese culture, the improper burial of an individual would lead to the in…
  16. [REDDIT] https://www.reddit.com/r/scaryeddie/comments/1481z2j/during_the_vietnam_war_the_usa_made_operation/ [archived]
    During the Vietnam war the Usa made "Operation Wandering Soul" it's some scary shit and this is one of the noises that was used was called "Ghost Tape Number 10."

CROSS-REFERENCE

Project MKUltra: CIA Behavioral Modification Research Program (1950s–1970s) — PARALLEL-PATTERN (OUTGOING)PROJECT MKULTRA: CIA BEHA…Operation Wandering Soul: Ghost Tape Number 10 Psychological Warfare in VietnamOPERATION WANDERING SOUL: G…THIS FILEPARALLEL-PATTERN