evidence: The military demarcation line is also known as the ceasefire line, and it refers to the borders set based on where South and North Korea occupied at the time of the signing of the Armistice Agreement of the Korean War on July 27, 1953. Since the military demarcation line was drawn, tragically, free travel between the two Koreas became impossible. A Boundary Line in the Demilitarized Zone (DMZ) (1969) by The Bureau of Public InformationNational Archives of Korea 2-1. Southern Limit Line and Northern Limit Line [...] A military demarcation line shall be fixed, and both sides shall withdraw 1.2 miles (2 km) from this line so as to establish a demilitarized zone between the opposing forces. A demilitarized zone shall be established as a buffer zone to prevent the occurrence of incidents, which might lead to a resumption of hostilities; as provided in the paragraph.