Question: Who led the invasion of South Korea?
About the article "Korean War", section "Division of Korea (1954–present)".

Candidate passages:
The First Manchu invasion of Korea occurred in 1627, when Hong Taiji led the Manchu army against Korea's Joseon dynasty.
It was followed by the Second Manchu invasion of Korea. 
In early 1950, the United States made its first commitment to form a peace treaty with Japan that would guarantee long-term U.S. military bases.
Some observers (including George Kennan) believed that the Japanese treaty led Stalin to approve a plan to invade U.S.-supported South Korea on June 25, 1950.
Korea had been divided at the end of World War II along the 38th parallel into Soviet and U.S. occupation zones, in which a communist government was installed in the North by the Soviets, and an elected government in the South came to power after UN-supervised elections in 1948.
In June 1950, Kim Il-sung's North Korean People's Army invaded South Korea.
Fearing that communist Korea under a Kim Il Sung dictatorship could threaten Japan and foster other communist movements in Asia, Truman committed U.S. forces and obtained help from the United Nations to counter the North Korean invasion.
The Soviets boycotted UN Security Council meetings while protesting the Council's failure to seat the People's Republic of China and, thus, did not veto the Council's approval of UN action to oppose the North Korean invasion.
A joint UN force of personnel from South Korea, the United States, Britain, Turkey, Canada, Australia, France, the Philippines, the Netherlands, Belgium, New Zealand and other countries joined to stop the invasion.
After a Chinese invasion to assist the North Koreans, fighting stabilized along the 38th parallel, which had separated the Koreas.
Truman faced a hostile China, a Sino-Soviet partnership, and a defense budget that had quadrupled in eighteen months.
The Korean Armistice Agreement was signed in July 1953 after the death of Stalin, who had been insisting that the North Koreans continue fighting.
In North Korea, Kim Il-sung created a highly centralized and brutal dictatorship, according himself unlimited power and generating a formidable cult of personality. 
The two sides conducted postwar negotiations.
The Manchus forced Korea to open markets near the borders because the long conflict with Ming brought economic hardship to the Manchus.
Korea also returned the Warka tribe to Later Jin.
The Manchus regularly exacted tribute from Korea.
The relationship between Joseon and Later Jin remained uncomfortable and bleak.
While the first invasion was not as catastrophic to Korea as the second, nine years later, would be, it was bitterly resented by Confucian statesmen and scholars who believed that it was treacherous for Korea to abandon Ming China after the Chinese assistance against Japan during the Seven-Year War.
This resentment was inflamed when in 1636 the Manchus demanded to change the terms of diplomatic relationship from equality to Suzerainty-Tributary.
The Korean Court, dominated by anti-Manchu hawks, rejected the demand.
This led to the second Manchu invasion of Korea in 1636. 
The United States and twenty other member states of the United Nations supported South Korea in repelling an invasion by North Korea and its allies into South Korea.
For their involvement, 133 Americans were presented with the Medal of Honor, two of which attended USMA.