Following commission he returned to Nigeria and was posted to 1st Battalion, Nigerian Army Enugu as a Platoon Commander.
Ahmadu Bello University | Sani Abacha | Sani | Maria Bello | Andrés Bello | Muhammed Bello | Commentarii de Bello Gallico | Frank Bello | Bello | Walden Bello | Sani Anuar Kamsani | Ahmadu Bello | Suleyman Sani Akhundov | Sani Ndanusa | Sani Kaita | Sani Bello | Mohammed Bello Abubakar | Mamman Bello Ali | Hermínio Bello de Carvalho | Domingo Bello y Espinosa | Commentarii de Bello Civili | Bello (Colombia) | Atsidi Sani | Asmar Latin Sani |
Omu joined the army on December 10, 1962, and was a course mate to Ibrahim Babangida, Sani Bello and Garba Duba at the Nigeria Military Training College.