The Union of Forces for Democracy and DevelopmentâÂÂFundamental (UFDDâÂÂF) is one of the rebel groups fighting in the war in Chad. It is led by Abdelwahid Aboud Mackaye. The UFDD-F is essentially an Arab organization, which was formed as a dissident split from the UFDD following tensions and conflicts of interest between Arab militants and Tubu militants who dominated the organization.