On this day 37 years ago, on December 10, 1988 (November 2, 1988 in the lunar calendar), the United Nations peacekeeping force was awarded the Nobel Peace Prize. On December 10, 1988, the Nobel Peace Prize award ceremony was solemnly held in the auditorium of the University of Oslo in Norway. On behalf of the United Nations peacekeeping force, UN Secretary-General Pérez de Cuellar accepted the gold medal and certificate awarded by the Norwegian Nobel Prize Committee. For the first time in the history of the Nobel Peace Prize, the award was awarded to "an organization composed at least in part of military force". This is due to the outstanding contributions made by the UN peacekeeping force and the observer mission in fulfilling the requirements of the UN Security Council on ceasefire, upholding the UN Charter, and peacefully resolving conflicts. United Nations peacekeeping forces are peacekeeping forces dispatched by the United Nations to areas of conflict and dispute in accordance with resolutions adopted by the Security Council or the General Assembly and with the consent of the parties concerned. These forces are mainly used to prevent the recurrence or expansion of conflicts by supervising ceasefire, armistice or armistice agreements and withdrawal of troops, and to promote the parties to the conflict to settle disputes through peaceful negotiations. The composition of these forces is generally provided by neutral countries among the member states of the United Nations. They are stationed for a period of three to six months, which can be extended if necessary with the approval of the Security Council. Before the 1960s, many of the operations of the United Nations to send peacekeeping forces were of a coercive nature, interfering in the internal affairs of other countries, and suppressing revolutions and national liberation movements. After the late 1960s, as the third world countries became more powerful in the United Nations, UN "peacekeeping operations" were gradually used to prevent the expansion and recurrence of conflicts between countries. In February 1965, the 19th session of the UN General Assembly established the Special Committee on Peacekeeping Operations, with the task of comprehensively reviewing all aspects of peacekeeping operations. The United Nations has a UN-run school for training military observers in Finland. The training is held twice a year, each session is 40 to 50 trainees, and the duration is 3 weeks. The training content includes the characteristics of the mission area, transportation, communication, battlefield rescue, military English, physical fitness and the use of small arms. More important are the on-site handling of ceasefire violations, investigation, writing reports, and the identification of non-UN system signs. Peacekeeping is one of the purposes of the Charter of the United Nations. There are probably two forms of peacekeeping operations in the military sense: military observation missions and peacekeeping forces. The Secretary-General of the United Nations defines peacekeeping operations as: operations organized by the United Nations with the participation of military personnel but no enforcement authority in order to help maintain or restore peace in conflict areas. Therefore, whether the United Nations sends military observers or peacekeeping forces, the basic principles of operation are the same. Peacekeeping operations must first obtain the consent of the host government, and usually the consent of the other parties directly concerned. Military personnel are provided voluntarily by Member States, military observers are unarmed, and soldiers of peacekeeping forces are equipped with light defensive weapons, but the use of force can only be authorized in self-defense. History has proved that the actions of peacekeeping forces have won worldwide recognition for their important role in helping to establish and maintain ceasefires and creating buffer zones between conflicting countries.