Military Rank Equivalence

Rank Ladder Highest first

🇯🇵 Japan · Army	NATO equivalent	South Korea · Army 🇰🇷
Officers
No equivalent	OF-10 Marshal / General of the Army	원수 元帥 Wonsu
幕僚長たる陸将 Bakuryōchō-taru-rikushō	OF-9 General	대장 大將 Daejang
陸将 Rikushō	OF-8 Lieutenant General	중장 中將 Jungjang
陸将補 Rikushō-ho	OF-7 Major General	소장 小將 Sojang
No equivalent	OF-6 Brigadier General	준장 准將 Junjang
1等陸佐 Ittō rikusa	OF-5 Colonel	대령 大領 Daeryeong
2等陸佐 Nitō rikusa	OF-4 Lieutenant Colonel	중령 中領 Jungnyeong
3等陸佐 Santō rikusa	OF-3 Major / Commandant	소령 少領 Soryeong
1等陸尉 Ittō rikui	OF-2 Captain / 1st Lieutenant	대위 大尉 Daewi
2等陸尉 Nitō rikui 3等陸尉 Santō rikui 准陸尉 Jun rikui	OF-1 Lieutenant	중위 中尉 Jungwi 소위 小尉 Sowi
Enlisted ranks
陸曹長 Rikusōchō	OR-9 Sergeant Major	원사 元士 Wonsa
1等陸曹 Ittō rikusō	OR-8 1st Sergeant	상사 上士 Sangsa
2等陸曹 Nitō rikusō	OR-7 Sergeant 1st Class	중사 中士 Jungsa
3等陸曹 Santō rikusō	OR-6 Staff Sergeant	하사 下士 Hasa
No equivalent	OR-4 Corporal	병장 兵長 Byeongjang
陸士長 Rikushichō	OR-3 Private 1st Class	상등병 上等兵 Sangdeungbyeong
1等陸士 Ittō rikushi	OR-2 Private	일등병 一等兵 Ildeungbyeong
2等陸士 Nitō rikushi	OR-1 Private	이등병 二等兵 Ideungbyeong

Tiers neither force uses are hidden. An OF/OR code held by only one of the two is kept and marked — a missing tier is itself a difference in how the two hierarchies are built.