The combined Korean navy of 70 ships under the commands of Admirals Yi Sun-sin and Yi Eok-gi was carrying out a search-and-destroy operation because the Japanese troops on land were advancing into the Jeolla Province. The Jeolla Province was the only Korean territory to be untouched by a major military action, and served as home for the three admirals and the only active Korean naval force. The admirals considered it best to destroy naval support for the Japanese to reduce the effectiveness of the enemy ground troops.