Goguryeo-Tang War
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Was a war between Goguryeo and the Tang dynasty.
Chronology
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March 662: For several months until February 662, when it had to withdraw from the campaign due to the harsh winter conditions and the defeat of its subsidiary force.
January 669: In 666, the Goguryeo dictator Yeon Gaesomun died and an internal struggle between his sons for power broke out. Goguryeo was thrown into chaos and weakened by the succession struggle. In 668, the Tang and Silla forces besieged and conquered Pyongyang, which led to the conquest of Goguryeo.
Was the first stage of the Goguryeo-Tang War.
May 645: Gaimou (Kaemo) fell to the Tang after only 11 days.
June 645: Tang forces crossed the Liao River into Goguryeo territory.
June 645: The Tang army successfully set Liaodong ablaze with incendiary projectiles and breached its defensive walls, resulting in the fall of Liaodong to the Tang forces.
June 645: In 645, during the Tang-Goguryeo War, the Tang army led by Li Shiji marched to Baiyan (Paekam) and the Goguryeo commanders surrendered the city on 27 June, leading to the territory being taken over by the Tang Dynasty.
October 645: Exacerbated by worsened conditions for the Tang army due to cold weather and diminishing provisions, Emperor Taizong ordered to withdraw from Goguryeo on October 13.
Was the second stage of the Goguryeo-Tang War. Goguryeo was annexed by Tang China.
January 662: After the conquest of Baekje in 660, the Tang and Silla forces planned to invade Goguryeo. In 661, the Tang forces set off to Goguryeo. As the Tang army advanced with 350,000 troops, Silla was only requested to provide supplies during this expedition. In 662, Yeon Gaesomun defeated General Pang Xiaotai at the Battle of Sasu. The Tang army besieged Pyongyang, Goguryeo's capital.
