On September 18, 1950, the tide turned in Korea.
140,000 United Nations troops, whom invading North Koreans had pushed back to the southeast tip of South Korea, broke through a 140-mile defensive perimeter, called the Pusan Perimeter, and began the drive north.
And as they did, 13,000 US Marines, who had gone ashore at Inchon Harbor, on the west coast of the Korean peninsula three days before, began their drive south.
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