United Nations Partisan Infantry Korea
The United Nations Partisan Infantry Korea (UNPIK; Korean: 국제연합유격군 / 주한유엔군유격부대) was a guerrilla commando unit during the Korean War that was consolidated under the control of United States Far East Command. The details of the undercover operation were made public by the US Army in 1990.
Source: Wikipedia — United Nations Partisan Infantry Korea (CC BY-SA 4.0)