In 1967, he was promoted to lieutenant colonel at the start of the civil war campaign towards Enugu, which was captured later that year. In December 1967, he was appointed Commander of the Nigerian Army's 1st Infantry Brigade, a position he held till July 1968. Towards the end of the Nigerian Civil War, Danjuma led a battalion that freed Jaja Wachuku, first Speaker of the Nigerian House of Representatives as well as first Ambassador to the United Nations and first Foreign Affairs Minister, from detention by the Ojukwu government.