Training and Doctrine Command formed in 1981, and is located at Minna. It supervises the Army's schools, including the Depot. The Army sponsors the Nigerian Military School at Zaria. The Nigerian Army is governed by the Nigerian Army Council (NAC). The Nigerian Army is functionally organized into combat arms, which are infantry and armored; the combat support arms, which are artillery, engineers, and signals; the combat support services comprise the Nigerian Army Medical Corps, supply and transport, ordinance and finance. Others include the military police, intelligence, physical training, chaplains, public relations and band. Training and Doctrine Command (TRADOC) located in Minna is responsible for doctrinal, training and combat development, and supervises training centers. There are 17 Corps Training Schools and the Nigerian Army College of Logistics (NACOL). The Nigerian Army said its newly created the 6th Division in Port Harcourt was established to organize and improve its internal security operations in four states of the Niger Delta. The Division will cover the Army’s 2 Brigade Akwa Ibom; 16 Brigade Bayelsa and 63rd Brigade in Delta, respectively, with divisional headquarters in Port Harcourt. This arrangement will help to curtail activities of militants, banditry, inter-communal clashes, illegal bunkering, kidnapping, robberies, Niger Delta Avengers and pipeline vandalism prevalent in the area. Insecurity in these states negatively impacts on the national economy resulting from sabotage by criminal entities within the region. Current formations include:  The government and military chiefs, working with the National Assembly, civil society and international partners, need to do much more: implement comprehensive defense sector reform, including clear identification of security challenges; a new defense and security policy and structure to address them; and drastic improvement in leadership, oversight, administration and accountability across the sector. It currently has over 6,000 officers and 150,000 soldiers. In December 1983 the new régime of the Head of State of Nigeria, Major General Muhammadu Buhari, announced that Nigeria could no longer afford an activist anti-colonial role in Africa. Anglophone members of the Economic Community of West African States (ECOWAS) established ECOMOG, dominated by the Nigerian Army, in 1990 to intervene in the civil war in Liberia. Smaller army forces had previously carried out UN and ECOWAS deployments in the former Yugoslavia, Angola, Rwanda, Somalia, and Sierra Leone. The anti-colonial policy statement did not deter Nigeria under Generals Ibrahim Babangida in 1990 and Sani Abacha in 1997 from sending peacekeeping troops as part of ECOMOG under the auspices of ECOWAS into Liberia and later into Sierra Leone when civil wars broke out in those countries.