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BATTLE // January 1, 1258

Mongol invasions of Vietnam

Overview

Four major military campaigns were launched by the Mongol Empire, and later the Yuan dynasty, against the kingdom of Đại Việt ruled by the Trần dynasty and the kingdom of Champa in 1258, 1282–1284, 1285, and 1287–1288. The campaigns are treated by a number of scholars as a success due to the establishment of tributary relations with Đại Việt despite the Mongols suffering major military defeats. In contrast, modern Vietnamese historiography regards the war as a major victory against the foreign invaders.

Overview adapted from Wikipedia, licensed under CC BY-SA 4.0.

Significance

The Mongol invasions of Vietnam comprised four major campaigns launched by the Mongol Empire and later the Yuan dynasty against Đại Việt under the Trần dynasty and the kingdom of Champa, conducted in 1258, 1282–1284, 1285, and 1287–1288. The outcome of the conflict is assessed differently depending on the interpretive framework applied. A number of scholars treat the campaigns as a qualified success for the Mongol side, pointing to the establishment of tributary relations with Đại Việt as the operative political result despite the Mongols suffering significant military defeats in the field. Vietnamese historiography, by contrast, characterizes the wars as a decisive victory against foreign invasion, emphasizing the repeated repulsion of Mongol forces. The campaigns thus occupy an ambiguous place in the broader history of Mongol expansion: unlike conquests that resulted in direct incorporation of territory, the Vietnamese case produced a tributary arrangement extracted at considerable military cost, illustrating the limits of Mongol power in mainland Southeast Asia within the wider pattern of Mongol invasions and conquests of the thirteenth and early fourteenth centuries.

Forces & casualties

Troop strength

  • Mongol Empire1,258
    medium
  • Đại Việt1,283–1,285
    medium

Both sides were near-evenly matched in numbers

Casualties

  • Mongol Empire1,285
    medium102% loss rate
  • Đại Việt1,258
    medium98% loss rate

Commanders (34)

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Last verified July 2026
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