Seven thousand army soldiers of the Shimazu clan led by Yoshihiro SHIMAZU fought against the tens of thousands of soldiers (mentioned afterwards) of Ming and Korean Allied Forces led by TON Yi Yuan, who was the busho (military commander) of Ming, in Sacheon City on Korean Peninsula in October 1598.
慶長3年9月（1598年10月）、朝鮮半島の泗川市で島津義弘率いる島津氏軍7千が明の武将董一元率いる数万（後述）の明・朝鮮連合軍と戦って撃退した戦い。