Gyerim Territory Area Command

In the place of Baekje and Goguryeo, the Tang created the Protectorate General to Pacify the East, Ungjin Commandery.

In 660, when a joint Silla-Tang alliance destroyed Baekje, the Tang dynasty established a protectorate named the Ungjin Commandery in its place.

Furthermore, the Tang emperor offered to Munmu of Silla that he take over a proposed protectorate called the "Great Commandery of Gyerim", which was refused.

[1] Following the offer Silla launched a surprise attack against the Tang forces and destroyed the Ungjin commandery.

Over the course of several battles Tang forces would be driven north of the Taedong river by the Silla army.