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BATTLE // May 2, 1185

Battle of Dan-no-ura

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Overview

The Battle of Dan-no-ura was a major sea battle of the Genpei War, occurring at Dan-no-ura, in the Kanmon Straits off the southern tip of Honshū. On April 25, 1185, the fleet of the Minamoto ('Genji') clan, led by general Minamoto no Yoshitsune, defeated the fleet of the Taira clan (Heike). The morning rip tide was an advantage for the Taira, but turned to their disadvantage in the afternoon. The young Emperor Antoku was one of those who died among the Taira nobles.

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

Significance

The Battle of Dan-no-ura ended the Genpei War by destroying the Taira clan's remaining naval power. Fought in the Kanmon Straits off the southern tip of Honshū, it was the decisive engagement in a conflict that had begun in 1180. The Minamoto fleet under Minamoto no Yoshitsune defeated the Taira fleet despite the latter holding an initial tidal advantage in the morning hours. Emperor Antoku, the child emperor held by the Taira as a symbol of their legitimacy, perished in the battle along with other Taira nobles, extinguishing the clan's claim to imperial authority. The destruction of the Taira at Dan-no-ura left the Minamoto in unchallenged military dominance and set the conditions for the consolidation of warrior rule that would follow under the Minamoto.

Tactics

The battle was fought at sea in the Kanmon Straits. The morning rip tide favored the Taira, but conditions shifted in the afternoon, turning the tidal current to the Minamoto's advantage and contributing to the Taira defeat.

Forces & casualties

Troop strength

  • Minamoto clan3,000
    medium
  • Taira clan1,000
    medium

Minamoto clan fielded a 3.0 : 1 numerical advantage

Commanders (19)

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Last verified July 2026
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