On 15 January 1966, a group of Nigerian Army officers launched the country’s first military coup, abruptly ending the First Republic. This dramatic intervention marked the beginning of military influence in Nigerian governance and set in motion events that would reshape the nation’s political landscape for decades.
The Setting Before the Coup
In the early 1960s, Nigeria’s newly independent government faced mounting challenges. Regional rivalries, contested elections and widespread perceptions of political corruption eroded public confidence. Against this backdrop, some members of the Nigerian Army grew increasingly dissatisfied with civilian leadership and its perceived inability to manage the country’s affairs.
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Who Were the Coup Plotters?
The coup was carried out primarily by junior army officers, most holding the rank of major. Among the officers most associated with planning and execution were:
- Major Emmanuel Ifeajuna
- Major Chukwuma Kaduna Nzeogwu
- Major Adewale Ademoyega
- Major Chris Anuforo
- Major Donatus Okafor
- Major Humphrey Chukwuka
These officers operated in different regions, coordinating movements in Lagos, Ibadan, Kaduna and other strategic locations.
Education and Military Training
The officers involved in the coup came from a mix of professional backgrounds:
- Some, like Major Ifeajuna and Major Ademoyega, had completed university degrees before joining the army.
- Others, such as Major Anuforo and Major Okafor, trained at military institutions including the Royal Military Academy, Sandhurst or Nigerian Army training centres.
This combination reflects a military cohort that was both professionally trained and exposed to broader educational experiences, but they were foremost soldiers familiar with army structure and discipline.
Motivations Behind the Coup
The motivations expressed by participants and documented in historical reports centre around:
- Perceived political corruption within the civilian government
- Breakdowns in governance and administrative order
- Concerns over national unity and rising regional tensions
Officers involved in the coup believed that decisive action was necessary to correct what they saw as a failing political system. Their statements after the coup consistently cited dissatisfaction with the ruling political elite and a desire to restore stability and integrity to national affairs.
What Happened on 15 January 1966
The coup unfolded simultaneously in multiple cities. Key government figures were killed including:
- Prime Minister Sir Abubakar Tafawa Balewa
- Northern Region Premier Sir Ahmadu Bello
- Western Region Premier Samuel Ladoke Akintola
- Federal Minister Festus Okotie‑Eboh
These assassinations shocked the nation and created a power vacuum that the coup plotters attempted to exploit.
Outcome and Aftermath
Despite initial advances, the coup did not succeed in establishing lasting control. Senior army officers who were not part of the plot quickly regained influence. Major‑General Johnson Aguiyi‑Ironsi, the highest‑ranking military officer at the time, suppressed resistance to military rule and assumed leadership of the country, dissolving the existing constitution and establishing a new military government.
The January 1966 coup was followed by growing tensions, including a counter‑coup in July 1966 and events that ultimately led to the Nigerian Civil War. The intervention fundamentally altered Nigeria’s political structures and weakened civilian governance.
The coup set a precedent for direct military involvement in politics that would recur throughout Nigerian history. It also heightened regional and ethnic suspicions, contributing to social divisions that persisted in subsequent years.
While the coup was initially justified by its perpetrators as a necessary correction to political decay, its consequences were profound and far‑reaching, shaping Nigeria’s governance and national identity well beyond 1966.
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Author’s Note
The January 1966 coup was a pivotal moment in Nigeria’s history. Carried out by a group of army officers across multiple regions, it ended the First Republic and ushered in military governance. Motivated by dissatisfaction with political leadership, corruption and administrative failures, the coup had immediate consequences, including the assassination of senior politicians, the rise of Major‑General Johnson Aguiyi‑Ironsi, and long-term political instability. Understanding this event is essential to grasping Nigeria’s post-independence political evolution, the role of the military in governance, and the challenges of national unity.
References
- 1966 Nigerian coup d’état overview of events, plotters and immediate outcomes.
- Biographical and educational backgrounds of key coup officers.
- Historical analyses on motivations and aftermath of the 1966 coup.

