Battle of Baekgang
In 660, the Tang empire and the Silla kingdom sent their allied armies to conquer Baekje. The Baekje capital Sabi fell to the forces of Tang and Silla. Baekje was conquered on 18 July 660, when King Uija of Baekje surrendered at Ungjin. The Tang army took the king, the crown prince, 93 officials, and 20,000 troops as prisoners. The king and the crown prince were sent as hostages to the Tang empire. The Tang empire annexed the territory and established five military administrations to control the region instead of Silla, which they painfully accepted. In a final effort, General Gwisil Boksin led the resistance against Tang occupation of Baekje. He requested military assistance from their Yamato allies. The Tang fleet, comprising 170 ships, advanced towards Chuyu and encircled the city at the Baekgang River. As the Yamato fleet engaged the Tang fleet, they were attacked by the Tang fleet and were destroyed. In 663, the Baekje resistance and Yamato forces were annihilated by the Tang and Silla forces at the Battle of Baekgang. Subsequently, Prince Buyeo Pung of Baekje and his remaining men fled to Goguryeo.