Yi Sun-sin
Admiral
"Do not grieve that I die. Only beat the enemy."โ Words attributed to Yi Sun-sin as he died at the Battle of Noryang.
Biography
Yi Sun-sin was born into a yangban family but did not rise quickly through court politics. Instead, he built his reputation through competence in frontier postings and careful attention to training and logistics.
When the Imjin War broke out in 1592, he was serving as commander of the Left Naval District of Jeolla. Unlike many officials, he had long anticipated conflict with Japan and quietly prepared ships, weapons, and crews.
At sea, Yi emphasized discipline, gunnery, and the tactical use of geography. He deployed panokseon warships with sturdy decks for cannon and, according to later accounts, used turtle ships (geobukseon) with covered roofs to break enemy lines.
Victories at Okpo, Hansando, and other battles cut Japanese supply lines and showed that, even as Joseon armies struggled on land, control of the sea could change the course of the war.
After a politically driven dismissal led to disaster at Chilchonryang, Yi was reinstated with only a handful of ships. His stunning victory at Myeongnyang restored Korean morale and blocked Japanese dominance at sea. He was killed in action at Noryang in 1598, reportedly asking his aides to hide his death until the battle was won.