With Soviet Russian support, 90,000 North Korean forces invaded South Korea on June 25, 1950, seeking to reunite the country under a communist government, and within days Seoul fell to the North Korean Army. U.S. troops under Gen. MacArthur entered the war, but North Korean forces drove the South Koreans and their allies south to Pusan. MacArthur then organized an invasion of the port of Inchon on Sept. 15, 1950, surprising the North Koreans, recapturing Seoul, cutting North Korean supply lines, and forcing them back across the 38th parallel, the original boundary. As 300,000 Chinese troops were poised to enter the war, President Truman warned MacArthur against approaching the border, but MacArthur wanted to push the communists out of both North and South Korea, and Truman eventually fired him for failing to follow orders. After China entered the war, North Korean and Chinese forces drove U.N. forces south of the 38th parallel. On July 27, 1953, both sides reached an agreement at Panmunjom that set a new boundary near the 38th parallel and included a two-mile-wide demilitarized zone at the border. Korea remained divided into North and South, and the war cost 2.5 to 5 million lives; nearly 40,000 American soldiers were killed in action, more than 103,000 were wounded, and Jackson County had at least six killed and hundreds wounded.