The US president, Harry S. Truman, dispatched US land, air, and sea forces to South Korea in support, hoping to drive the North Koreans back to their side of the 38th Parallel. As the US and South Korea pushed the North’s army back, communist Chinese forces intervened in late 1950.
By the middle of 1951, most major fights had ended. Both sides of Korea, both backed by large countries,were pushing from either side of the 38th parallel. The front lines stabilized, while negotiations began to be made. But this still wasn’t the end.
The 38th Parallel, the line dividing North and South Korea, was crossed on June 25th, 1950, officially starting the Korean War. DPRK (The Democratic People’s Republic of Korea), pushed into South Korean (then the Republic of Korea (ROK)) territory and by September had taken over almost all of their country. When the United States heard about the start of what would be a four year war, they called for a meeting the United Nations Security Council. At the time, the Soviet Union boycotting the UN over issues of Chinas lack of representation.
The Korean War was the first “hot” war of the Cold War! Continued through the years of 1950-1953.