Third_Goryeo–Khitan_War

Third Goryeo–Khitan War

The Third Goryeo-Khitan War was an 11th-century conflict between the kingdom of Goryeo and Khitan forces near what is now the border between China and North Korea. The Goryeo-Khitan Wars began in 993 with the first campaign and continued with the second campaign.

Background

In 993, Khitans under General Xiao Sunning invaded Korea, but retreated after truce negotiations with minister Seo Hui of Goryeo, establishing friendly relations between the two nations. In 1004, Khitans invaded China. Chinese forces were terribly defeated, and the Chinese were forced to pay tribute to the Liao emperor.

However, the tension between Goryeo and Liao created another war. In 1009, General Gang Jo of Goryeo led a coup against King Mokjong, killing the king and establishing military rule. In 1010, the alliance was broken and Liao attacked Korea for General Gang's treason. Also, Khitans claimed six garrison settlements east of the Yalu River, which Goryeo claimed as its territory in truce negotiations during 993. The Koreans fought fiercely but were defeated. However, the Goryeo king managed to retain his claim on the six garrison settlements. The Khitans retreated from the peninsula, with no great prize for the war, but they did not give up their hope of gaining the six garrison settlements and making Goryeo pay tribute.

The Invasion and Battle of Kwiju

Beginning in the summer of 1018, the Khitans constructed a bridge across the Yalu River. In December of 1089, 100,000 Khitan soldiers under the command of General Xiao Baiya crossed the bridge into Goryeo territory, but were met by an ambush of Goryeo soldiers. King Hyeonjong had heard the news of invasion, and ordered his troops into battle against the Khitan invaders. General Gang Gam-chan, who did not have any military experience since he was a government official, became a commander of the Goryeo army of about 208,000 men (the Khitans still had advantages, even outnumbered 2 to 1, since Khitan troops were mostly mounted while the Koreans were not), and marched toward Yalu River.

Near the Garrison Settlement of Heunghwajin, there was a small stream. General Gang ordered the stream blocked until the Khitans began to cross it, and when the Khitans were mid-way across, he ordered that the dam be destroyed so that the water would drown much of the Khitan army. The damage was great, but the Khitans did not abandon their campaign in spite of the challenges represented by defenders and by winter conditions in the northwest. They pushed through to approach Kaesong, the capital, but were defeated by a force led by General Kang Kam-ch'an.

Koryo's led a massive attack that all but annihilated the Khitan army. Barely a few thousand of the Liao troops survived the bitter defeat at Kusong. Four years later, Koryo and the Liao dynasty reached a negotiated peace agreement and established normal relations. The Khitan never again invaded Koryo.

Aftermath

This was the last invasion of Goryeo by the Khitan, as the two reached a peace agreement four years thereafter. Both the Liao Dynasty and Goryeo enjoyed a time of peace, and their cultures were at their height. However, as the balance of power on the Liao-Goryeo border shifted, the Jurchens, who lived around the border between the two nations, began to expand their power. Finally, in 1115, Jurchen chief Wányán Āgǔdǎ founded the Jin Dynasty in Manchuria, and began to attack the Khitans. In 1125, Jurchen troops captured the Liao king with help from the Chinese, who encouraged the Jurchens in the hope of gaining territories they lost to the Khitans before. Most Khitans fled to Turkestan, where they established the Kingdom of Western Liao (Kara-Khitai). Many of them were forced to surrender to the Jurchens.

See also

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