He gave the warning to officers and soldiers undergoing Main Battle Tank Training at Nigerian Army Armour School, Bauchi.
Army spokesman, Col. Sagir Musa, in a statement on Thursday, noted that Buratai visited the school on Wednesday.
A total of one-hundred and fifty-five officers and soldiers are undergoing training to become commanders, crew men, drivers and technicians.
The Army chief said he was satisfied with the quality of training, as well as commitment and discipline of the participants.
He disclosed that on completion, they would operate the new platforms when deployed to mission areas.
“While I commend your efforts to the training, let me warn that you must operate/handle the new equipment proficiently. We will not accept cowardice, sabotage or inefficiency under any guise whatsoever.”
Buratai told the participants to maintain high standards of professionalism, effectiveness and discipline in whatever roles they might be assigned to.