During their campaign, general Gang Gam-chan cut the supplies of the Liao troops and harassed them relentlessly. Exhausted, the Liao troops decided to retreat hastily northward. Monitoring the movement of their troops, general Gang Gam-chan attacked them in the vicinity of Gwiju, ending in a complete victory for the Goryeo dynasty. The surrendered Liao troops were divided up among the provinces of Goryeo and settled in isolated and guarded communities. These prisoners were valued for their skill in hunting, butchering, skinning, and leather tanning. Over the next few centuries, they evolved into the Baekjeong class, who came to form the lowest caste of the Korean people. After the battle, peace negotiations followed and the Liao dynasty did not invade Korea again. Korea entered in a long and peaceful period with its foreign neighbours across the Yalu River. The victory at the Battle of Kuju is regarded as one of the three greatest military victories (other victories are Battle of Salsu and Battle of Hansando) in Korean history.