World-changing1950 – 1953 · 3 years
Korean War
Korea
North Korea's invasion triggered a three-year UN-backed war that killed 3-4 million Koreans and left the peninsula permanently divided.
Estimated casualties
2.5M – 3.5Mestimated dead
HEADLINE3.0M — the single figure used on the map
North Korean estimates ~3-4M; South Korean ~1M military, 1-2M civilian. Total includes disease/starvation.
SOURCEWikipedia: Korean War casualties; PRIO/Uppsala Conflict Data
What happened
Divided after WWII, Korea saw North (Soviet-backed) and South (US-backed) governments dispute peninsula control. North Korean forces invaded June 1950, sweeping south rapidly. UN forces, mostly American, landed at Inchon (Sept 1950), pushing north. Chinese intervention (Oct 1950) pushed UN forces south. For two years, armies seesaw'd across the peninsula. Armistice (July 1953) restored the 38th parallel division. Korea remained technically at war (armistice, not peace treaty). Roughly 1 million military deaths (mostly Korean) and 2-3 million civilian deaths (disease, bombing, starvation). North and South remained hostile, militarized states.
Why it mattered
The Korean War established the UN as an international security arbiter (though weakened by Cold War divisions). It demonstrated US commitment to containing communism globally. The war accelerated US militarization during the Cold War and justified NATO expansion. It created a permanent US military presence in East Asia (50,000+ troops remain). Korea's permanent division made it a Cold War symbol alongside Berlin and Vietnam. The Korean War and armistice remains among history's most unresolved conflicts—technically still ongoing.
Belligerents5
- North Korea
- South Korea
- United States
- China
- Soviet Union
ON THE MAPSoviet Union (Cold War)
Conflict graph
SUB-CONFLICTS · 31
- Battle of Bowling Alley1950
- Battle of Chochiwon1950
- Battle of Chongchon1950
- Battle of Chosin1950
- Battle of Chunchon1950
- Battle of Hadong1950
- Battle of Han, Korea1950
- Battle of Inchon1950
- Battle of Koto-ri1950
- Battle of Kum1950
- Battle of Naktong Bulge (1st)1950
- Battle of Naktong Bulge (2nd)1950
+ 19 more in the atlas.
Sources
- Wikipedia: Korean War
- Britannica: Korean War
- UCDP: Korean War
- Wikipedia — text reused under CC BY-SA 4.0
Open in the atlas →Seeks the timeline to 1950 and opens this record.
Cite as: Korean War (1950 – 1953). War Atlas. https://waratlas.org/c/korean-war · Sources & methodology