1979 South Korean coup d'état

Coup d'état of December Twelfth
Date	12 December 1979
Location	Seoul, South Korea
Result	Mutiny successful Shingunbu military group became the new controller of Republic of Korea Armed Forces; Starting of consolidation of power under Major General Chun Doo-hwan;
Belligerents
Shingunbu Hanahoe military clique; Military Security Command; ;	Korean Government Ministry of National Defense Joint Chiefs of Staff; Special Warfare Command; ; ;
Commanders and leaders
Chun Doo-hwan; Roh Tae-woo	Choi Kyu-hah; Jeong Seung-hwa; Jang Tae-wan; Jung Byeong-joo
Casualties and losses
11 killed, 15 wounded 1 Truck destroyed	5 killed, 5 wounded

The coup d'état of December Twelfth or the 12·12 Military Insurrection (Korean: 12·12 군사 반란; Hanja: 十二十二軍事反亂) was a mutiny which took place on 12 December 1979, in South Korea, where a secret society of military officers known as Hanahoe led by Major General Chun Doo-hwan mutinied against the Chief of Staff of the Republic of Korea Army General Jeong Seung-hwa. The coup led to Chun strengthening his military and political position in South Korea, leading to his outright seizure of power as president in 1980.