Seventy-five years ago, the Korean War began with North Korea’s invasion of South Korea. The conflict, which claimed millions of lives, has left an enduring legacy. Despite its profound impact, the Korean War is often overshadowed by World War II, earning the moniker “The Forgotten War,” even from the US Army. Here are key insights into the Korean War and its significance.

The Korean War’s Beginning and Impact
The Korean War commenced on June 25, 1950, when over 135,000 North Korean troops crossed the 38th parallel into South Korea. This invasion triggered a brutal conflict involving 16 nations, including the United States, under the United Nations Command. Chinese troops later intervened on North Korea’s side. An armistice signed on July 27, 1953, ceased active fighting but left the war officially unresolved as no peace treaty was signed.
Pyongyang: Briefly Under US Control
For eight weeks in 1950, US forces occupied Pyongyang, North Korea’s capital. The occupation began on October 19, when the US Army’s 1st Cavalry Division and South Korean troops seized the city. By October 22, the US Eighth Army had established its headquarters in a building previously used by North Korean leader Kim Il Sung. However, the occupation ended on December 5 when Chinese forces pushed US troops out of Pyongyang.
The US Bombing Campaign in North Korea
The US conducted a relentless bombing campaign during the war, dropping 635,000 tons of bombs on North Korea over three years. This total surpassed the 500,000 tons dropped in the Pacific during World War II. By November 1950, the destruction had left much of North Korea in ruins, forcing citizens to live in dugout shelters. Historian Charles Armstrong notes that this devastation continues to influence North Korea’s military strategy, including its focus on nuclear weapons development.
North Korea’s War Approval: Stalin and Mao’s Role
Kim Il Sung sought approval from Soviet leader Joseph Stalin to unite Korea under communist rule. Initially hesitant, Stalin approved the invasion in April 1950, on the condition that China’s Mao Zedong also agreed. Mao’s support, influenced by China’s civil war victory in 1949, provided North Korea with additional backing, paving the way for the invasion.
The Korean War’s Effect on Taiwan
The Korean War inadvertently protected Taiwan from a communist invasion. In 1949, communist China was preparing to attack Taiwan, but the US Navy intervened following the Korean War’s outbreak. President Harry Truman dispatched warships to the Taiwan Strait, redirecting Chinese forces to the Korean front. This move safeguarded Taiwan, which remains a self-governed democracy.

Jet Fighters: The First Dogfight
The Korean War marked the first-ever jet-to-jet dogfight on November 8, 1950, over Sinuiju near the Yalu River. American F-80 jets engaged Soviet-made MiG-15s, likely flown by Soviet pilots. The following day, US Navy Lt. Cmdr. William Amen became the first pilot to confirm a MiG-15 kill. These aerial battles, especially in “MiG Alley,” highlighted the intense air combat of the war.
The Korean War: A “Police Action”
Despite its scale, the Korean War was never officially declared a war by the United States. Instead, it was termed a “police action” under a United Nations resolution. This precedent of engaging in significant military conflicts without formal war declarations has shaped US foreign policy in subsequent conflicts, including Vietnam and Iraq.
