Nigeria and other ECOWAS members agreed a Protocol on Mutual Defence Assistance, in Freetown, Sierra Leone, on 29 May 1981. Among other organs such as a Defence Committee and Council, it provided for the establishment of an Allied Armed Force of the Community (AAFC) as needed. Within Africa, ECOMOG represented the first credible attempt at a regional security initiative since the Organisation of African Unity (OAU) tried to established an 'Inter-African Force' to intervene in Chad in 1981. ECOWAS deployed ECOMOG forces later on to control conflict in other cases: