Nigeria's army is ordering a review of the cases of more than 600 soldiers and officers, including dozens condemned to death for allegedly deserting the battle against Islamic extremists.

The review comes three months after the inauguration of President Muhammadu Buhari, who has vowed to crush the Boko Haram Islamic uprising that has spilled across Nigeria's borders.

An army order received Sunday by the AP requires all accused and condemned soldiers to northern Kaduna town for a committee starting Aug. 7 "to screen and assess all disciplinary cases arising from erstwhile Op Zaman Lafiya" against Boko Haram.

Seventy-two soldiers were condemned to death last year for alleged cowardice, mutiny, aiding the enemy and other charges. Another 579 are before ongoing courts-martial.

Their lawyers have said they were ill-equipped for battle.