Operation Blacklist Forty

Operation Blacklist Forty
Part of the aftermath of World War II and the Cold War
DateSeptember 4, 1945 (1945-09-04) – August 15, 1948 (1948-08-15)
(2 years, 11 months, 1 week and 6 days)
Location
Result
Belligerents

 United States


Korean communists
(until 1947)

 Empire of Japan


People's Republic of Korea
(until 1946)


Anti-trusteeship Movement
(since 1945)


Korean communists
(since 1947)
Commanders and leaders
John R. Hodge
Dean Rusk
Charles H. Bonesteel III
Ahn Chai-hong
Kim Kyu-sik

Nobuyuki Abe  
Yoshio Kozuki  


Lyuh Woon-hyung


Kim Ku
Syngman Rhee


Pak Hon-yong
Kim Dal-sam
Units involved
XXIV Corps
National Security Guard
Kempeitai

Japanese Korean Army


South Korea Labor Party
Communist Party of Korea

Operation Blacklist Forty was the codename for the United States occupation of Korea between 1945 and 1948. Following the end of World War II, US forces landed within the present-day South Korea to accept the surrender of the Japanese, and help create an independent and unified Korean government with the help of the Soviet Union, which occupied the present-day North Korea. However, when this effort proved unsuccessful, the United States and the Soviet Union both established their own friendly governments, resulting in the current division of the Korean Peninsula.