The military dictatorship in Nigeria was a period when members of the Nigerian Armed Forces held power in Nigeria from 1966 to 1999 with an interregnum from 1979 to 1983. The military was able to rise to power often with the tacit support of the elite through coup d'états. Since the country became a republic in 1963, there has been a series of military coups in Nigeria. The military dictatorship in Nigeria began with the coup d'état of 1966 which was planned and executed by a group of revolutionary Nigerian nationalist officers started as a small rebellion military cell under Emmanuel Ifeajuna. Major Chukwuma Kaduna Nzeogwu was the face of the coup attempt, which involved five other army majors: Timothy Onwuatuegwu, Chris Anuforo, Don Okafor, Adewale Ademoyega and Humphrey Chukwuka. It operated as a clandestine movement of junior officers during the post-independence period of 1960–1966. The plot received support from left-wing intellectuals, who rejected conservative elements in society, like the traditional establishment of Northern Nigeria and sought to overthrow the First Nigerian Republic. File:General Yakubu Gowon, from ASC Leiden - Rietveld Collection - Nigeria 1970 - 1973 - 01 - 093 New Nigerian newspaper page 7 January 1970. End of the Nigerian civil war with Biafra (cropped).jpg|General [[Yakubu Gowon]] File:Muhammadu Buhari.jpg|Major General [[Muhammadu Buhari]] File:Ibrahim Babangida (cropped).jpg|General [[Ibrahim Babangida]] File:Abdulsalami Abubakar detail DF-SC-02-04323.jpg|General [[Abdulsalami Abubakar|Abdulsalam Abubakar]] Major General Johnson Aguiyi-Ironsi was made the Head of the Federal Military Government of Nigeria, serving for six months before being overthrown and assassinated in the 1966 Nigerian counter-coup. Aguiyi-Ironsi was succeeded by General Yakubu Gowon, who established a Supreme Military Council. Gowon held power until July 1975, when he was overthrown in a bloodless coup. Brigadier (later General) Murtala Mohammed succeeded Gowon.