The Korean War officially began on June 25, 1950, when North Korea invaded South Korea.

The Korean War involved North Korea, South Korea, the United States, the Soviet Union, China, and Japan in various capacities.

The Korean War was caused by a combination of ideological differences, territorial disputes, and the Cold War rivalry between the United States and the Soviet Union.

The United States and its allies supported South Korea during the Korean War.

The Soviet Union and its allies supported North Korea during the Korean War.

The Korean War ended in a stalemate, with neither side achieving its objectives.

It is estimated that approximately 3 million people died in the Korean War.

The Korean War ended on July 27, 1953, with the signing of an armistice agreement.

North and South Korea remain divided to this day, with no peace treaty formally ending the Korean War.

Douglas MacArthur was the United Nations commander during the Korean War.

Peng Dehuai was the Chinese commander during the Korean War.

The Korean Armistice Agreement was the peace treaty that ended the Korean War.

The DMZ is a buffer zone separating the two Koreas, a heavily fortified area along the border, and a no-man's land between the two Koreas.

The 38th parallel was the line of demarcation between North and South Korea during the war.

Resolution 83 was the United Nations resolution that authorized military action in Korea.