Since the Armistice was signed, it has been monitored by members of the Neutral Nations Supervisory Commission (NNSC). Since 1953, members of the Swiss[5] and Swedish[6] Armed Forces have been members of the NNSC stationed near the DMZ.

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The Neutral Nations Supervisory Commission (NNSC) was established by the Korean Armistice Agreement signed July 27, 1953, ending the Korean War. It is, with the Military Armistice Commission (UNCMAC), part of the mechanism regulating the relations between the Democratic People’s Republic of Korea (DPRK, North Korea) and the Republic of Korea (ROK, South Korea).

According to the Armistice, the NNSC shall be composed of four senior officers, two of whom shall be appointed by neutral nations nominated by the United Nations Command (UNC) and two of whom shall be appointed by neutral nations nominated jointly by the Korean People’s Army (KPA) and the Chinese People’s Volunteers (CPV). The term “neutral nations” was defined as those nations whose combat forces did not participate in the hostilities in Korea. The United Nations Command chose Sweden and Switzerland, while the Korean People’s Army and Chinese People’s Volunteers chose the People’s Republic of Poland and Czechoslovakia.

On August 1, 1953, the first Swiss NNSC delegation, consisting of 96 members, arrived in Panmunjeom. The first force reduction took place in 1955, when the delegation was reduced to 41 members. In the following years, the delegation was successively reduced. Since 1982, there are six Swiss members in Panmunjom and until August 1987, exactly 700 Swiss soldiers have worked for the NNSC in Korea. The mission of the NNSC is defined in article 41 of the Armistice and reads as follows: “The mission of the NNSC shall be to carry out the function of supervision, observation, inspection, and investigation and to report the results of such supervision, observation, inspection and investigation to the Military Armistice Commission.”