In 1956, Egypt came into conflict with the combined forces of Israel, France, and the United Kingdom resulting in the Suez Crisis. Combined political pressure from the United States, the Soviet Union and the United Nations resulted in the withdrawal of French, British and Israeli forces from Egyptian territory and the cessation of hostilities. To maintain the peace the United Nations established its first Peacekeeping force, the United Nations Emergency Force (UNEF). Brazil, Canada, Colombia, Denmark, India, Norway, Sweden and Yugoslavia provided troops to serve in the UNEF. The mission lasted from November 1956 until June 1967. Ninety days of service with the UNEF was required for award of the medal.