Outcome of U.S. involvement in Korean War

If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Read Online (Free) relies on page scans, which are not currently available to screen readers. To access this article, please contact JSTOR User Support . We'll provide a PDF copy for your screen reader.

With a personal account, you can read up to 100 articles each month for free.

Get Started

Already have an account? Log in

Monthly Plan

  • Access everything in the JPASS collection
  • Read the full-text of every article
  • Download up to 10 article PDFs to save and keep
$19.50/month

Yearly Plan

  • Access everything in the JPASS collection
  • Read the full-text of every article
  • Download up to 120 article PDFs to save and keep
$199/year

Log in through your institution

Purchase a PDF

Purchase this issue for $16.00 USD. Go to Table of Contents.

How does it work?

  1. Select the purchase option.
  2. Check out using a credit card or bank account with PayPal.
  3. Read your article online and download the PDF from your email or your account.

journal article

American Involvement in the Korean War

The History Teacher

Vol. 16, No. 2 (Feb., 1983)

, pp. 249-263 (15 pages)

Published By: Society for History Education

https://doi.org/10.2307/493313

https://www.jstor.org/stable/493313

Read and download

Log in through your school or library

Alternate access options

For independent researchers

Read Online

Read 100 articles/month free

Subscribe to JPASS

Unlimited reading + 10 downloads

Purchase issue

$16.00 - Download now and later

Journal Information

The History Teacher is the most widely recognized journal in the United States devoted to more effective teaching of history in pre-collegiate schools, community colleges and universities.

Publisher Information

The Society for History Education, Inc., an affiliate of the American Historical Association, supports all disciplines in history education with practical and insightful professional analyses of traditional and innovative teaching techniques.

Rights & Usage

This item is part of a JSTOR Collection.
For terms and use, please refer to our Terms and Conditions
The History Teacher © 1983 Society for History Education
Request Permissions

Korean War, (1950–53) Conflict arising after the post-World War II division of Korea, at latitude 38° N, into North Korea and South Korea. At the end of World War II, Soviet forces accepted the surrender of Japanese forces north of that line, as U.S. forces accepted Japanese surrender south of it. Negotiations failed to reunify the two halves, the northern half being a Soviet client state and the southern half being backed by the U.S. In 1950 North Korea invaded South Korea, and U.S. Pres. Harry Truman ordered troops to assist South Korea. The UN Security Council, minus the absent Soviet delegate, passed a resolution calling for the assistance of all UN members in halting the North Koreans. At first North Korean troops drove the South Korean and U.S. forces down to the southern tip of the Korean peninsula, but a brilliant amphibious landing at Inch’ŏn, conceived by Gen. Douglas MacArthur, turned the tide in favour of the UN troops, who advanced near the border of North Korea and China. The Chinese then entered the war and drove the UN forces back south; the front line stabilized at the 38th parallel. MacArthur insisted on voicing his objections to U.S. war aims in a public manner and was relieved of his command by Truman. U.S. Pres. Dwight D. Eisenhower participated in the conclusion of an armistice that accepted the front line as the de facto boundary between the two Koreas. The war resulted in the deaths of approximately 2,000,000 Koreans, 600,000 Chinese, 37,000 Americans, and 3,000 Turks, Britons, and other nationals in the UN forces.

Top Questions

Why did the Korean War start?

How was the United States involved in the Korean War?

How were China and the Soviet Union involved in the Korean War?

Was the Korean War technically a war?

How did the Korean War end?

Summary

Read a brief summary of this topic

Korean War, conflict between the Democratic People’s Republic of Korea (North Korea) and the Republic of Korea (South Korea) in which at least 2.5 million persons lost their lives. The war reached international proportions in June 1950 when North Korea, supplied and advised by the Soviet Union, invaded the South. The United Nations, with the United States as the principal participant, joined the war on the side of the South Koreans, and the People’s Republic of China came to North Korea’s aid. After more than a million combat casualties had been suffered on both sides, the fighting ended in July 1953 with Korea still divided into two hostile states. Negotiations in 1954 produced no further agreement, and the front line has been accepted ever since as the de facto boundary between North and South Korea.

Revolution, division, and partisan warfare, 1945–50

The Korean War had its immediate origins in the collapse of the Japanese empire at the end of World War II in September 1945. Unlike China, Manchuria, and the former Western colonies seized by Japan in 1941–42, Korea, annexed to Japan since 1910, did not have a native government or a colonial regime waiting to return after hostilities ceased. Most claimants to power were harried exiles in China, Manchuria, Japan, the U.S.S.R., and the United States. They fell into two broad categories. The first was made up of committed Marxist revolutionaries who had fought the Japanese as part of the Chinese-dominated guerrilla armies in Manchuria and China. One of these exiles was a minor but successful guerrilla leader named Kim Il-sung, who had received some training in Russia and had been made a major in the Soviet army. The other Korean nationalist movement, no less revolutionary, drew its inspiration from the best of science, education, and industrialism in Europe, Japan, and America. These “ultranationalists” were split into rival factions, one of which centred on Syngman Rhee, educated in the United States and at one time the president of a dissident Korean Provisional Government in exile.

In their hurried effort to disarm the Japanese army and repatriate the Japanese population in Korea (estimated at 700,000), the United States and the Soviet Union agreed in August 1945 to divide the country for administrative purposes at the 38th parallel (latitude 38° N). At least from the American perspective, this geographic division was a temporary expedient; however, the Soviets began a short-lived reign of terror in northern Korea that quickly politicized the division by driving thousands of refugees south. The two sides could not agree on a formula that would produce a unified Korea, and in 1947 U.S. President Harry S. Truman persuaded the United Nations (UN) to assume responsibility for the country, though the U.S. military remained nominally in control of the South until 1948. Both the South Korean national police and the constabulary doubled in size, providing a southern security force of about 80,000 by 1947. In the meantime, Kim Il-sung strengthened his control over the Communist Party as well as the northern administrative structure and military forces. In 1948 the North Korean military and police numbered about 100,000, reinforced by a group of southern Korean guerrillas based at Haeju in western Korea.

The creation of an independent South Korea became UN policy in early 1948. Southern communists opposed this, and by autumn partisan warfare had engulfed parts of every Korean province below the 38th parallel. The fighting expanded into a limited border war between the South’s newly formed Republic of Korea Army (ROKA) and the North Korean border constabulary as well as the North’s Korean People’s Army (KPA). The North launched 10 cross-border guerrilla incursions in order to draw ROKA units away from their guerrilla-suppression campaign in the South.

Outcome of U.S. involvement in Korean War

Britannica Quiz

History: Fact or Fiction?

Get hooked on history as this quiz sorts out the past. Find out who really invented movable type, who Winston Churchill called "Mum," and when the first sonic boom was heard.

In its larger purpose the partisan uprising failed: the Republic of Korea (ROK) was formed in August 1948, with Syngman Rhee as president. Nevertheless, almost 8,000 members of the South Korean security forces and at least 30,000 other Koreans lost their lives. Many of the victims were not security forces or armed guerrillas at all but simply people identified as “rightists” or “reds” by the belligerents. Small-scale atrocities became a way of life.

The partisan war also delayed the training of the South Korean army. In early 1950, American advisers judged that fewer than half of the ROKA’s infantry battalions were even marginally ready for war. U.S. military assistance consisted largely of surplus light weapons and supplies. Indeed, General Douglas MacArthur, commander of the United States’ Far East Command (FECOM), argued that his Eighth Army, consisting of four weak divisions in Japan, required more support than the Koreans.

Get a Britannica Premium subscription and gain access to exclusive content. Subscribe Now