Facts: - caption: paik in july 2011 . - battles: world war ii korean war - allegiance: manchukuo south korea - commands: 5th i corps ii corps first republic of korea army republic infantry of korea army republic of korea armed forces regiment 5th infantry division 1st infantry division - birth date: 23 november 1920 - serviceyears: manchukuo 1946-1960 1944-1945 south korea 1945-1946 flag_of_the_army_of_the_republic_of_korea . svg 23px - name: paik sun-yup - branch: manchukuo south korea korean constabulary south korea - image: roka border general paik sun yup july 27th 2011 ce.jpg - birth place: kangso-gun pyongan province , north korea -rrb- , japanese korea -lrb- now nampho , south - rank: manchukuo svg 23px general first lieutenant south korea first lieutenant flag_of_the_army_of_the_republic_of_korea . Based on these bullet points, write a short biography describing the life of paik sun-yup .
paik sun-yup -lrb- korean : , hanja : -rrb- -lrb- born november 23 , 1920 -rrb- is a retired south korean military officer .he served both manchukuo and south korea , the latter during the korean war .paik is known for his service during the korean war and for being the first four-star general in the history of the south korean military .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 and again in the inchon landings .