<P> After the war, Operation Glory was conducted from July to November 1954, to allow combatant countries to exchange their dead . The remains of 4,167 U.S. Army and U.S. Marine Corps dead were exchanged for 13,528 KPA and PVA dead, and 546 civilians dead in UN prisoner - of - war camps were delivered to the South Korean government . After Operation Glory, 416 Korean War unknown soldiers were buried in the National Memorial Cemetery of the Pacific (The Punchbowl), on the island of Oahu, Hawaii . Defense Prisoner of War / Missing Personnel Office (DPMO) records indicate that the PRC and the DPRK transmitted 1,394 names, of which 858 were correct . From 4,167 containers of returned remains, forensic examination identified 4,219 individuals . Of these, 2,944 were identified as from the U.S., and all but 416 were identified by name . From 1996 to 2006, the DPRK recovered 220 remains near the Sino - Korean border . </P> <P> The Korean Armistice Agreement provided for monitoring by an international commission . Since 1953, the Neutral Nations Supervisory Commission (NNSC), composed of members from the Swiss and Swedish Armed Forces, has been stationed near the DMZ . </P> <P> In April 1975, South Vietnam's capital was captured by the North Vietnamese army . Encouraged by the success of Communist revolution in Indochina, Kim Il - sung saw it as an opportunity to invade the South . Kim visited China in April of that year, and met with Mao Zedong and Zhou Enlai to ask for military aid . Despite Pyongyang's expectations, however, Beijing refused to help North Korea for another war in Korea . </P> <P> Since the armistice, there have been numerous incursions and acts of aggression by North Korea . In 1976, the axe murder incident was widely publicized . Since 1974, four incursion tunnels leading to Seoul have been uncovered . In 2010, a North Korean submarine torpedoed and sank the South Korean corvette ROKS Cheonan, resulting in the deaths of 46 sailors . Again in 2010, North Korea fired artillery shells on Yeonpyeong island, killing two military personnel and two civilians . </P>

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