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BATTLE // June 25, 1950

First Battle of Seoul

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Overview

The First Battle of Seoul, known in North Korean historiography as the Liberation of Seoul, was the North Korean capture of the South Korean capital, Seoul, during June 1950 at the start of the Korean War.

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

Significance

The North Korean capture of Seoul in June 1950 marked the opening military crisis of the Korean War. North Korea committed 107,000 troops against a South Korean force of 65,000, and South Korean casualties of 44,000 against North Korean losses of 1,112 reflect the severity of the defeat. The fall of the capital within days of the June 25 invasion demonstrated the inability of South Korean forces under Rhee and Chae Byeong-deok to halt the offensive, accelerating international pressure for intervention and establishing North Korean forces under Kim Il Sung and Kim Chaek as the dominant ground power in the peninsula's opening phase. That North Korea refers to the engagement as the Liberation of Seoul underscores the ideological framing each side applied to the conflict from its very outset.

Forces & casualties

Troop strength

  • South Korea65,000
    medium
  • North Korea107,000
    medium

North Korea fielded a 1.6 : 1 numerical advantage

Casualties

  • South Korea44,000
    medium68% loss rate
  • North Korea1,112
    medium1% loss rate

Commanders (4)

North Korea

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6 sibling battles · 11 factions

Last verified June 2026
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