Established by Security Council resolution 814 (1993) of 26 March 1993, UNOSOM II took over the work of the Unified Task Force (UNITAF), a multinational force responsible for creating a secure environment for humanitarian relief operations in Somalia. UNOSOM II was to complete, through disarmament and reconciliation, the task begun by UNITAF for the restoration of peace, stability, law and order. The mission's principal activities included: monitoring of factions; violence prevention; weapons control; securing of transportation hubs; protecting personnel, equipment, and installations of UN and non-UN agencies; mine clearance; and assisting refugees and displaced persons. On 4 February 1994, the Security Council, by its resolution 897 (1994), revised UNOSOM II's mandate to include, inter alia, assisting the Somali parties in implementing the Addis Ababa Agreements, aiding in the reorganization of theSomali police and judicial system, and helping in various aspects of the country's political process. During the mission's mandate, three persons served as head of mission (HoM) and special representative of the Secretary-General (SRSG): Jonathan T. Howe, from March 1993 to February 1994; Lansana Kouyate (Acting), from February to June 1994; and James Victor Gbeho, from July 1994 to April 1995. Lieutenant-General Çevik Bir served as the mission's force commander from April 1993 to January 1994; Lieutenant-General Aboo Samah Bin Aboo Bakar served in this capacity from January 1994 to March 1995. UNOSOM II was withdrawn from Somalia in early March 1995.