It is a tradition in the military that when a junior is appointed as a service chief, senior officers, who are ahead of him or her, would proceed on retirement.

The understanding is that senior military officers are unlikely to take orders from their juniors.

Tinubu had announced the immediate retirement of General Lucky Irabor who was the Chief of Defence Staff; the Chief of Army Staff, Lieut Gen Farouk Yahaya; the Chief of Naval Staff, Vice Admiral Awwal Gambo, and Air Marshal Oludayo Amao, the Chief of Air Staff and replaced them with new military chiefs.

The new service chiefs are Maj Gen Christopher Musa who is the Chief of Defence Staff; the Chief of Army Staff, Maj Gen Taoreed Lagbaja; the Chief of Naval Staff, Rear Admiral Emmanuel Ogalla while Air Vice Marshal Hassan Abubakar was appointed the Chief of Air Staff.

DIG Kayode Egbetokun was appointed as the acting Inspector-General of Police and Maj. Gen. E Undiandeye, Chief of Defence Intelligence.

Also, a former Economic and Financial Crimes Commission Chairman, Nuhu Ribadu, who was earlier appointed as the Security Adviser to the President, was elevated to the National Security Adviser.

While the new CDS is a member of 38 Regular Course, the COAS, the CNS, and the CAS are members of 39 Regular Course.

However, the DHQ in the memo with reference number DHQ/I5/PLANS/801/13 directed all officers with seniority on commission above that of Nigerian Defence Academy Regular Course 39 to submit their applications for voluntary retirement from service with immediate effect.

This, it said, was meant to preserve and uphold the tenets of the military profession which values hierarchy and service discipline.

The memo, copied to the army, navy, and air force headquarters, read in part, “It would be recalled that the President, Commander-in-Chief of the Armed Forces of the Federal Republic of Nigeria, His Excellency, Bola Ahmed Tinubu recently appointed new CDS and Service Chiefs on June 19, 2023.

‘’In order to preserve and uphold the tenets of the military profession which values hierarchy and service discipline, it is important that all officers whose officer cadet courses run seniority above that of the current Service Chiefs disengage from the Service.

“Consequently, I am directed to respectfully request services to direct all officers with seniority on commission above that of NDA Regular Course 39 to submit their applications for voluntary retirement from Service with immediate effect. I am to add that affected officers are to submit their applications to their respective Service Headquarters no later than Mon July 3, 2023.”

When asked about the number of naval officers that may be affected by the directive on Thursday, the spokesperson for the army, Onyema Nwachukwu, said, “I am not able to generate such statistics now until it unfolds.”

In his response, the Nigerian Navy, Adedotun Ayo-Vaughan, said, “I think on this, acting DDI, DHQ (Director, Defence Information) can be reached to speak for the AFN. Already there were speculations in some print media on this. Nevertheless once cleared and permitted, it’ll be disclosed.’’

The spokesperson for the Nigerian Air Force, Air Commodore Ayodele Famuyiwa, declined comment, saying he is handing over to his successor on Monday.

But the acting Director, Defence Information, Brig Gen Tukur Gusau could not be reached on the number of senior officers that may be affected by the directive as he did not respond to phone calls and a text message sent to his phone.

But commenting on the directive to the senior officers, retired Col Foluso Saka said it was time the military established a corps for retired personnel, adding that their experiences, especially those with technical skills, could still benefit the country.