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Goryeo Military Reorganization in the 1120s

Type Event Region East Asia Time 1122–1130

Facing the rise of Jurchen power and the fall of the Liao dynasty, Goryeo systematically reorganized its northern border defenses in the 1120s, stren…

Timeline

  1. 1122–1124Hamgyeong Province border · Hamgyeong ProvinceAfter King Injong acceded, the Liao dynasty was about to fall and Jurchen pressure was mounting. The court urgently deployed northern border defenses, dispatching central troops to reinforce the Six Garrisons, repairing frontier fortresses, and appointing capable generals to oversee border affairs, laying the foundation for subsequent military reorganization.
  2. 1125–1127Six Garrisons · Six GarrisonsAfter Liao fell in 1125, Goryeo reorganized the Six Garrisons' military system: adding garrison troops, rotating deployments, stockpiling grain and weapons, and strengthening reconnaissance and early warning against Jurchen tribes. Frontier forces expanded noticeably compared to the end of King Yejong's reign.
  3. 1128–1130Gaeseong · GaeseongBy the end of the 1120s, Goryeo had completed adjustments to a border defense system centered on the Six Garrisons with the central imperial guards as backup. The court regularly reviewed the guards, reorganized local militia, and coordinated with the tributary relationship with Jin, stabilizing the northern situation on both military and diplomatic fronts.

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