High Quality Content by WIKIPEDIA articles! General Paik Sun-yup (born November 23, 1920) is a Korean military officer of Manchukuo and the Republic of Korea. He is known for his service during the Korean War and the first 4-star general in the history of ROK Armed Forces. His brother, Paik In-Yeop, also served in the Republic of Korea Army during the Korean War, commanding the 17th Independent Regiment at the Battle of Ongjin Peninsula and again in the Inchon Landings. He was born in Kangs -gun, South P'y ngan (currently the city of Nampo) in 1920. His family soon moved to Pyongyang and he graduated from Pyongyang Normal School in 1939. Instead of getting into teaching, he entered Mukden Military Academy of Manchukuo. After graduation, he became an officer of the Manchukuo Imperial Army, and served in Gando Special Force. He engaged in subduing communist guerrillas in Jiandao (eastern Manchuria). He joined the Japanese campaign on northern China for ten months from 1944 to 1945.