Kim Yushin
He was well acquainted with the Emperor Gaozong of the Tang Dynasty, for he and the Emperor were friends before Gaozong became an Emperor. King Muyeol was a great support to the Emperor, and the Emperor returned the support to King Muyeol. He constantly pleaded with the Tang for reinforcements to destroy Baekje, to which the Tang finally acquiesced in 660, sending 130,000 troops under General Su Dingfang. Meanwhile, Kim Yushin set out from Silla with 50,000 soldiers and fought the bloody Battle of Hwangsanbeol leaving Baekje devastated and unprotected. King Uija of Baekje finally surrendered, leaving only Goguryeo to face Silla as an adversary on the Korean peninsula.