Military Rule 1966 -1975, 1975 -1979, 1983 – 1985

Military rule is a form of unconstitutional administration of a state by members of the Armed Forces based on martial laws of successfully overthrowing the government of the state through a coup d'état. 

Coup d'état: It is a forceful overthrow or takeover of government in a state by the members of the Armed Forces.

Also, Military government implies a short dictation government by members of the Armed Forces that must have come to power after forcefully overthrowing the civilian government. Military government comes to power through the use of force or coercion.

Constitutional Duties of the Military:

(a)   The main or chief duty of the military is to defend the country from external attack.

(b)   To maintain the territorial integrity and security in its borders from violation on land, sea or air.

(c)   To suppress insurrection and act in aid of civil authorities to restore order when called upon to do so by the president, but subject to such conditions as may be prescribed by the National AssemblyThe National Assembly of the Federal Republic of Nigeria is a bicameral legislature established under section 4 of the Nigerian Constitution. It consists of a Senate with 109 members and a... More.

However, the Military at times deviates from the above-mentioned