Multinational Force & Observers MFO USED; The MFO is an independent international organization, with peacekeeping responsibilities in the Sinai.
The origins of the MFO lie in Annex I to the 1979 Treaty of Peace between Egypt and Israel. In 1981, the Treaty Parties negotiated a Protocol that established the MFO and defined its mission.
Twelve nations (Australia, Canada, Colombia, the Czech Republic, the Republic of the Fiji Islands, France, Hungary, Italy, New Zealand, Norway, the United States and Uruguay) contribute contingents to make up the MFO's Force. It is the largest element of the MFO and is a joint organization with army, air and naval components. As of 30 September 2011, the MFO's Force numbered 1656 personnel.
Contingents in the MFO rotate in and out of the Sinai using a system of progressive personnel changeover, with the exception of the United States Infantry Battalion which rotates as a unit. Length of tour of duty varies but most contingents spend from six to twelve months in the Sinai.