TL;DR
Unit 684 was a secret South Korean special forces unit created in 1968 to carry out high-stakes black operations. Most members mutinied in 1971, leading to a deadly confrontation. The government concealed details until the 2000s.
New details about Unit 684, a secret South Korean military unit involved in high-risk black operations during the Cold War, have been publicly revealed, shedding light on its formation, mission, and violent mutiny in 1971.
According to official reports and historical sources, Unit 684 was established on 1 April 1968 by South Korea’s KCIA and the Air Force, with 31 civilian recruits, many of whom were petty criminals or unemployed youths. Its primary aim was to carry out covert operations, including an assassination attempt on North Korean leader Kim Il Sung, in retaliation for North Korea’s failed Blue House raid in 1968. The unit underwent three years of brutal training on Silmido island, during which seven members died due to execution, fatigue, or other causes. In August 1971, as diplomatic relations improved, the unit’s mission was canceled. The remaining members mutinied, killing guards, hijacking a bus, and engaging in a firefight in Seoul, resulting in 20 deaths and four captured members, who were later executed. The South Korean government concealed the existence of Unit 684 until the 1990s, with full details only emerging in recent years following media and film disclosures.
Why It Matters
This revelation is significant because it exposes a previously hidden chapter of South Korea’s Cold War covert operations, illustrating the extent of clandestine military activities and human rights abuses. It also impacts historical understanding of South Korea’s internal security policies and the use of criminal recruits for national security missions.
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Background
During the Cold War, South Korea established secret units like Unit 684 to counter North Korean threats, especially after incidents like the Blue House raid. The unit’s existence was kept secret for decades, with only sporadic information available until the early 2000s. The mutiny in 1971 marked a turning point, revealing the dangerous and ethically questionable nature of such operations. The government’s concealment persisted until the 1990s, with full disclosures emerging as part of broader efforts to confront past abuses.
“They were the kind who would get into street fights a lot. They revolted because they felt they would never be allowed to leave the island or go to North Korea.”
— Yang Dong-su, former guard
“The unit was formed to conduct covert operations, including assassination missions, during a tense period of the Cold War.”
— South Korean defense officials (public reports)
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What Remains Unclear
It remains unclear how many members survived the mutiny beyond the four known survivors, details of the full scope of their missions, and whether any operations were successful or continued in secret after 1971. The extent of government involvement in covering up the unit’s activities is also still under investigation.
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What’s Next
Further declassification of documents and testimonies from former members or officials may shed more light on the unit’s full history. Ongoing research and media coverage are expected to continue revealing details about South Korea’s covert Cold War activities.
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Key Questions
What was the main purpose of Unit 684?
According to official reports, it was created to carry out high-risk covert missions, including an assassination attempt on North Korean leader Kim Il Sung, as part of Cold War strategic operations.
How many members were in Unit 684?
The unit initially consisted of 31 civilians, mostly petty criminals or unemployed youths, trained on Silmido island.
What happened during the mutiny in 1971?
The surviving members of the unit killed guards, hijacked a bus, and engaged in a firefight in Seoul, resulting in 20 deaths and the eventual execution of the mutineers.
Why was the existence of Unit 684 kept secret?
The South Korean government concealed the unit’s activities to avoid political repercussions and to maintain secrecy over covert military operations during the Cold War.
Are there ongoing investigations into Unit 684?
Yes, recent disclosures and declassified documents are prompting further investigation into the full scope of the unit’s activities and government involvement.
