Others bemoaned the lack of inclusion of an Igbo person in the new appointments.
Two appointments by Buhari stood out, according to social media buffs.
The new Chief of Army Staff, Ibrahim Attahiru, who replaces Buratai was said to have been sacked by him in 2017 as Theatre Commander of Operation Lafia Dole.
According to a report by TheCable, Buratai gave Attahiru an ultimatum to deliver BokoHaram leader, Abubakar Shekau. Attahiru reportedly failed in the task and was sacked as a Theatre Commander in 2017.
A story by the BBC said Attahiru was redeployed to an unspecified post in 2017.
No official reason was given for Maj Gen Ibrahim Attahiru’s removal.
Buratai gave him a deadline in July 2017 to deliver BokoHaram leader Abubakar Shekau dead or alive within 40 days.