Gyeongwon Line (1911–1945) on 1 April 1944. After the partition of Korea following the end of the Pacific War in 1945, the Gyeongwon Line was split along the 38th parallel between the stations of Hantangang and Choseongni. The railways in both South and North were nationalised, and the newly established Korean National Railroad took over operation of the truncated Gyeongwon Line, from Seoul to Choseongni; in the North, the Korean State Railway merged its section of the Gyeongwon Line, Choseongni−Wonsan, with the Wonsan−Gowon section of the former Hamgyeong Line to create the Gangwon Line. The line was severely damaged during the Korean War.
Australia in the Korean War where they became the first UN air unit to enter the war, primarily in ground support, combat air patrol, and escort missions. 3 RAR was rapidly committed as Australia's main land force contribution to the United Nations forces in the Korean War. After a period of intensive training and reinforcement in Japan, the battalion arrived in South Korea in late September 1950. The battalion formed part of the 27th Commonwealth Brigade and took part in the United Nations offensive into North Korea and the subsequent retreat into South Korea following the Chinese offensive in the winter of 1950–51. It was