Conflict21 January 1968
January 21 Incident
Thirty-one North Korean commandos tried to raid the presidential residence and were stopped in Seoul; the Homeland Reserve Forces were created in response.
Bureau of Public Information (공보처 홍보국 사진담당관) · Public domain · Source
On 21 January 1968, 31 North Korean special-forces soldiers reached the Segeomjeong area of Seoul on a mission to attack the Blue House before being stopped. Two days later North Korea seized the US intelligence ship Pueblo, and in November armed infiltrators landed at Uljin and Samcheok.
In response the Homeland Reserve Forces were founded in 1968 and resident registration cards introduced.