He attended the Command and Staff College, Jaji (1978–1979), and was then posted to Army Headquarters responsible for movement and planning.

In this role he handled troop movement planning for the Nigerian contingent in the United Nations' operations, UNIFIL, in Lebanon.

[4] Aziza was the Brigade Commander of the Amphibious Brigade in Calabar when he was appointed the first military administrator of Kebbi State, holding office from 28 August 1991 to January 1992, when he handed over to the elected civilian governor Abubakar Musa at the start of the aborted Nigerian Third Republic.

[5] He was Chairman of the Special Military Tribunal that convicted Olusegun Obasanjo and Major General Shehu Musa Yar'Adua for involvement in an alleged 1995 coup plot.

[10] Aziza was required by President Olusegun Obasanjo to retire from the army in June 1999 after the return to democracy with the Nigerian Fourth Republic, along with other former military administrators.

[11] In October 2000, he appeared before the Oputa panel on violation of human rights sitting in Abuja, investigating the Special Military Tribunal that sentenced Obasanjo to jail over the alleged 1995 coup.