李如松
Reinforcements led by Kobayakawa Takakage arrived at the battle, bringing Japanese forces to 15,000, forcing the Ming scouting party to retreat. At the same time, Li Rusong also arrived with 2,000 troops. Upon being informed of the Japanese presence by retreating soldiers, Li decided to take only half his men and charge ahead. Li Rusong's 1,000 cavalry encountered 3,000 troops under Awaya Kagenao occupying the hills around Byeokjegwan and fired on them with rockets. Awaya responded with matchlock fire but was unable to stop the rapid cavalry advance and was forced to retreat. However this led Li into a bowl shaped area where Inoue Kagesada brought 3,000 troops to attack his left flank and Awaya his front.