Dongmyeong Unit is one of the UN Peacekeeping Forces sent to Lebanon by the Republic of Korea Armed Forces (ROKA). It was formed on 21 June 2007. The conflict in Lebanon began in 1975, after an outbreak of armed clashes between Christians and the Lebanese, Syrian and Israeli militaries leading into the Lebanese Civil War. To prevent ongoing hostilities, the United Nations passed United Nations Security Council (UNSC) resolutions 425 and 426, activating the United Nations Interim Force in Lebanon (UNIFIL). As part of its contribution to UN forces, the Republic of Korea sent the Dongmyeong Unit as a rotational force to Lebanon in July 2007. The Dongmyeong Unit consisted of 300 people, including one battalion of Korean Special Forces and specialist troops filling various roles including engineering, communications, transport, maintenance and medical support.