Gwanggaeto of Goguryeo - Conquest of The North

Conquest of The North

In 395, during a campaign against Baekje, the King himself attacked and conquered Beili, a small part of the Khitan tribe located in central Manchuria. Its exact location is not known but it was not very far from the Songhua River.

In 400, Later Yan, founded by the Murong clan of the Xianbei in present-day Liaoning province, attacked Goguryeo. Gwanggaeto responded swiftly, recovering most of the territory seized by the Xianbei and driving most of them from Goguryeo. Then in 402, he decided to launch an attack on Later Yan itself, determined to protect his Kingdom from further threat. In the same year Gwanggaeto defeated the Xienpei, seizing some of their border fortresses. In 404, he invaded Liaodong and took the entire Liaodong Peninsula.

The Xianbei did not watch idly as Goguryeo forces took over their lands. In 405, forces of the Later Yan crossed the Liao River, and attacked Goguryeo but were defeated by Gwanggaeto. The Murong Xianbei invaded once again the following year, but yet again the Goguryeo King was able to repel them. Gwanggaeto led several more campaigns against Xianbei as well as against Khitan tribes in Inner Mongolia, which he brought under his control. In 408, the king sent a peace delegate to Gao Yun, then ruler of Later Yan/Northern Yan, to broker a settlement between the two dynasties, because Gao Yun descended from the Goguryeo royal house as well. Goguryeo control over the Liaoning region remained strong until the Tang Dynasty seized the area as a part of its war against Goguryeo in the late 7th century.

In 410 Gwanggaeto began his conquest of the Dongbuyeo. The Dongbuyeo was no match for the massive army of Goguryeo, and it suffered a series of defeats, finally surrendering to Goguryeo after King Gwanggaeto conquered sixty-four walled cities and more than 1,400 villages. Gwanggaeto also attacked several Malgal and Ainu tribes further north, bringing them under Goguryeo domination.