Murtala Muhammed joined the Nigerian Army in 1958. He spent short training stints in Nigeria and Ghana and then was trained as an officer cadet at
Sandhurst Royal Military Academy in England. After his training, he was commissioned as a
second lieutenant in 1961 and assigned to the Nigerian Army Signals that same year, later spending a short stint with the No. 3 Brigade Signals Troop in Congo. That year he traveled to the
Royal Corps of Signals at
Catterick Garrison, England for a course on advanced telecommunications techniques. On his return to Nigeria in 1964, he was promoted to major and appointed officer-commanding, 1st Signal Squadron in
Apapa, Lagos. In November 1965, he was made acting Chief of Signals of the Army, while his paternal uncle,
Inuwa Wada had recently been appointed Defense Minister. Unknown to Muhammed, majors planning the
January 1966 coup recruited troops from the signal unit. The coup plotters later went on to assassinate leading politicians and soldiers from the
Northern and Western region. After the coup plot failed, new military postings made by the new leader generated some discomfort in the North. In April 1966, Muhammed was promoted to Lieutenant Colonel and was the inspector of signals posted to Army Headquarters, Lagos in a move that was partly to pacify Northerners weary about the new military regime. Muhammed was also appointed member of a Post and Telecommunications management committee. Muhammed opposed the regime of
Johnson Aguiyi-Ironsi, which took power after a
coup d'etat on 15 January 1966. Aguiyi-Ironsi, as GOC of the Nigerian Army, brought normalcy back to the nation by imprisoning the coup makers and intimidating the federal cabinet into handing over the helms of government to him. However, many northerners saw this and the reluctance of Ironsi to prosecute the coup leaders, and the fact that the army was purportedly giving exceptional privileges to the coupist as an indication of Ironsi's support for the killings. Consequently, northern politicians and civil servants mounted pressure upon northern officers such as Muhammed to avenge the coup. The promulgation of Decree No. 34 restructuring Nigeria from a federal constitutional structure to a unitary structure also raised suspicions among many Northern officers and Muhammed and a few others began to contemplate separation of the Northern region from the country. == 1966 counter-coup ==