Paechon Line the Tohae Line. Following the end of the Pacific War and the subsequent partition of Korea, most of the Tohae Line was located in the US zone of occupation that later became South Korea, with the line being divided along the 38th Parallel between Changbang and Kalsan, and the Korean National Railroad operated passenger trains on the line between Tosŏng and Ch'ŏngdan until 1950. The line was heavily damaged during the Korean War, and the destruction of the Ryesong River bridge left the line truncated at Paech'ŏn. The truncated line ended up in North Korea after the Korean Armistice, becoming
North Korea in the Korean War Republic of Korea to the north and the pro-Western Republic of Korea to the south. This invasion was the first military action of the Cold War. Tactics were based on Soviet doctrine which emphasised rapid advances spearheaded by armoured and infantry assaults. The quality and power of the KPA’s initial invasion resulted in its opponents being forced back to the southern tip of the Korean peninsula. By July, American troops had entered the war on South Korea’s behalf. As far as American officials were concerned, it was a war against the forces of international communism itself. After some early back-and-forth