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Emperor Yang of Sui's three campaigns against Goguryeo

Type Event Region China Time 612–614

From 612 to 614 CE Emperor Yang personally led three campaigns against Goguryeo, mobilizing over a million troops and vast corvée labor, ending in de…

Timeline

  1. 612Sasu (around the Ch'ongch'on River) · Korean PeninsulaEmperor Yang led over a million troops against Goguryeo and failed to take Pyongyang; on the retreat he was pursued by the Goguryeo general Ulji Mun-deok, and the Sui army was surprised while crossing the Sasu, suffering heavy casualties. The first expedition failed.
  2. 613Liaodong front · LiaoningEmperor Yang campaigned east again but learned en route that Yang Xuangan had risen at Liyang and was forced to turn back to suppress him; the offensive at the front stalled, and popular uprisings and strongman separatism worsened at home.
  3. 614Liaodong · LiaoningEmperor Yang campaigned east a third time; Goguryeo sent envoys to sue for peace, and the Sui army withdrew without a decisive victory. Years of war exhausted the arsenals, rebellions erupted inside and beyond the passes, and Sui's foundations of rule were shaken.

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