<P> All (regular) members of the Joint Chiefs of Staffs are 4 - star generals and admirals, though the Deputy Chairman in the past has been 3 - star Lieutenant - General or Vice-Admiral intermittently . Traditionally, the Chairman is chosen from the Army (with one previous and one current exceptions as October 2013) while the Deputy Chairman is selected from either the Navy or the Air Force . The Commandant of the Marine Corps, legally subordinate to the Republic of Korea Navy, can attend the Joint Chiefs of Staff meetings when examining the matter pertaining to the Marine Corps . </P> <P> (Since July 2018) </P> <Table> <Tr> <Th> Portrait </Th> <Th> Name </Th> <Th> Position </Th> <Th> Branch </Th> </Tr> <Tr> <Td> </Td> <Td> General Jeong Kyeong - doo </Td> <Td> Chairman of the Joint Chiefs of Staff & Chief Director of the Joint Defense Headquarters </Td> <Td> Republic of Korea Air Force </Td> </Tr> <Tr> <Td> </Td> <Td> General Kim Yong - woo </Td> <Td> Chief of Staff of the Republic of Korea Army </Td> <Td> Republic of Korea Army </Td> </Tr> <Tr> <Td> </Td> <Td> Admiral Sim Seung - seob </Td> <Td> Chief of Naval Operations of the Republic of Korea Navy </Td> <Td> Republic of Korea Navy </Td> </Tr> <Tr> <Td> </Td> <Td> General Lee Wang - keun </Td> <Td> Chief of Staff of the Republic of Korea Air Force </Td> <Td> Republic of Korea Air Force </Td> </Tr> </Table> <Tr> <Th> Portrait </Th> <Th> Name </Th> <Th> Position </Th> <Th> Branch </Th> </Tr>

Chief of staff of the republic of korea army