The simplest course of this war is this
Kim Il Sung, a militaristic old man, sent troops to South Korea regardless of the actual situation, with wishful thinking. In front of the "United Nations Army", Golden Sun was defeated by himself, and almost made the old American drink the Yalu River. As the saying goes, our country was forced to send troops to help North Korea. Finally, the two sides ceased fire-the volunteers could not win (the victory in previous battles was based on their own heavy casualties and the obstacle of Korean mountainous terrain to the mechanized troops of the old United States), and the anti-war sentiment in the old United States was high.
The final result is that the volunteers saved the Golden Sun from the disaster of national subjugation, and the Golden Sun leveled the tomb of the volunteers' martyrs after they withdrew.