He was promoted to admiral in 1592 .
He was sent to the southern coast of Gyeongsang Province to command the province 's Eastern Fleet , with Yi Sun - sin , who became admiral before Won and took command of Jeolla Province 's Western Fleet .
He was promoted to admiral in 1592 and sent to the southern coast of Gyeongsang Province to command the province 's Eastern Fleet , with Yi Sun - sin , who became admiral before Won and took command of Jeolla Province 's Western Fleet .