Won Gyun
Naval commander; briefly Commander of the Three Provinces Naval Forces
"I will sail, since sailing is ordered."
Biography
Won Gyun is the war's cautionary tale and the reason Yi Sun-sin's story is a tragedy rather than a triumph. A naval commander of the neighbouring Gyeongsang province, he lost most of his own fleet in the opening days — by several accounts scuttling it himself — then fought alongside Yi in the early victories and spent the following years insisting to the court that the credit was his. The factional politics of Seoul made him useful. When Japanese agents planted a false report that a Japanese general could be intercepted at sea, Yi read it as a trap and refused to sail; Won Gyun's faction used the refusal to destroy him. Yi was arrested, tortured, and reduced to the ranks, and Won Gyun got the fleet he had wanted for five years. He took it out in August 1597, was ambushed at night at Chilcheollyang, and lost virtually the entire Korean navy — five years of shipbuilding and training gone in a few hours. He was killed in the rout. Thirteen ships escaped, and with them Korea's only remaining chance, which the court handed back to the man it had just tortured.
Did you know?
His campaign to discredit Yi Sun-sin succeeded, he got the fleet he had spent five years demanding, and he lost all of it in one night — the only Korean naval defeat of the entire war.
Key Battles
Battle of Okpo
Joseon Korea & Ming China victoryJune 16, 1592 · 1,000 total casualties
Yi Sun-sin had been demoted, imprisoned, and reduced to the ranks earlier in his career for refusing to flatter superiors, and had been posted to an obscure southern command in 1591 on Ryu Seong-ryong's recommendation. He used the posting to build a fleet for a war nobody else believed was coming. Okpo was the first sign that the sea would be a different war entirely.
Battle of Hansan Island
Joseon Korea & Ming China victoryAugust 14, 1592 · 9,000 total casualties
One of the most complete naval victories in history, and the strategic hinge of the entire war. Japan's plan depended on supplying its armies by sea up the west coast while they marched north; after Hansan the Yellow Sea was closed, and 158,000 men in Korea had to be fed overland through a country whose peasants were now rising against them. The Japanese advance died of logistics, and Hideyoshi ordered his navy never to fight Yi again.
Battle of Chilcheollyang
Toyotomi Japan victoryAugust 28, 1597 · 10,000 total casualties
The only Korean naval defeat of the war, and it took a court intrigue to arrange it. In one night Korea threw away five years of Yi's work and the sea route was open again — Japan's second invasion could be supplied. The court, with nothing left, released Yi from prison and reappointed him to command the thirteen surviving ships.
Life Journey
Timeline
1540
🌅 Birth
Born in Pyeongtaek
May 25, 1592
⚔️ Battle
Loses most of his fleet in the opening days
June 16, 1592
⚔️ Battle
Fights alongside Yi at Okpo and claims the credit
March 1, 1597
📍 Posting
His faction engineers Yi’s arrest; he takes the fleet
August 28, 1597
✝️ Death
Loses the entire navy and his life at Chilcheollyang