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BATTLE // February 23, 1885

Battle of Dong Dang

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Overview

The Battle of Đồng Đăng was an important French victory during the Sino-French War. The battle formed part of the French advance following the Lạng Sơn campaign and resulted in the temporary expulsion of Chinese forces from the Tonkin border region. After the battle, French forces destroyed the Gate of China at Zhennan Pass before withdrawing back toward Lạng Sơn. Three weeks later Chinese forces counterattacked, leading to the events that culminated in the Battle of Bang Bo. It is named after the town of Đồng Đăng, then in northern Tonkin, close to the border between China and Vietnam.

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

Forces & casualties

Troop strength

  • France2,000
    medium
  • Qing dynasty6,000
    medium

Qing dynasty fielded a 3.0 : 1 numerical advantage

Commanders (4)

France

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Last verified June 2026
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