Historical eventOctober 13645

Goguryeo–Tang War

Goguryeo–Tang War: Led by Emperor Taizong, the Tang army was forced to abandon a siege of Ansi Fortress.

In context

When
Thursday, October 13 6451381 years ago
Category
Historical eventA dated happening — a battle, treaty, launch, discovery, disaster or decision — recorded on this calendar day.
Era
7th century · 640s
Calendar
Julian — as recorded at the time
Recorded from
Wikipedia “On this day” feed

Dates before 15 October 1582 are in the Julian calendar, so the weekday shown follows the Julian reckoning of the time.

At a glance

Dates: 645 – 668.

Place: Liaodong Peninsula.

Type: war.

Timeline

Course of the war Conflict in 645 Main article: First conflict of the Goguryeo–Tang War First conflict of the Goguryeo-Tang War Emperor Taizong of Tang used Yŏn Kaesomun 's murder of King Yeongnyu of Goguryeo as the pretext for his campaign and started preparations for an invasion force in 644. General Li Shiji commanded an army of 60,000 Tang soldiers and an undisclosed number of tribal forces which gathered at Youzhou . Emperor Taizong commanded an armored cavalry force of 10,000,

What happened

Aftermath In 669, the Tang government established the Protectorate General to Pacify the East to control the former territories of Goguryeo . [ 1 ] A subordinate office was placed in Baekje . [ 1 ] By the end of the war, the Tang Empire had taken control over the former territories of Baekje and Goguryeo and tried to assert dominion over Silla . [ 2 ] Large parts of the Korean Peninsula were occupied by the Tang forces for about a decade. [ 3 ] However,

The Goguryeo–Tang War occurred from 645 to 668 and was fought between Goguryeo and the Tang dynasty. During the course of the war, the two sides allied with various other states. Goguryeo successfully repulsed the invading Tang armies during the first Tang invasions of 645–648. After conquering Baekje in 660, Tang and Silla armies invaded Goguryeo from the north and south in 661, but were forced to withdraw in 662. In 666, Yŏn Kaesomun died and Goguryeo became plagued by violent dissension, numerous defections,

October 13 through the years

Other entries on the same calendar day, in order.

  1. 645Goguryeo–Tang War
  2. 19931993 Finisterre earthquakes
  3. 1994The Troubles
  4. 20102010 Copiapó mining accident
  5. 2011King of Bhutan
  6. 2013Navaratri
  7. 20132013 Madhya Pradesh stampede
  8. 2016Monarchy of Thailand
  9. 2016Maldives
  10. 20192019 Chicago Marathon
  11. 2019Brigid Kosgei

Sources

Cite this page

“Goguryeo–Tang War”, What's On This Date, https://whatsonthisdate.com/app/event/goguryeo-tang-war-645-october-13, accessed October 29, 2026.

Cite the underlying source as well — the source links above go to the record this entry is adapted from.

Questions about this entry

When did Goguryeo–Tang War happen?

October 13 645 — 1381 years ago, on a Thursday.

Is this a Julian or a Gregorian date?

It is the date as recorded at the time, on the Julian calendar. The Gregorian equivalent falls about ten days later; sources from different countries may give either.

Where does this text come from?

Wikipedia “On this day” feed. Summaries are short adaptations that link back to the source, not reprints.

How do I cite this page?

Use the ready-made citation near the sources at the bottom of the page, and follow the source link to cite the underlying record as well.

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