The Wahhabi revolt in Asir prompted Mehmed Ali’s first deployment of untrained conscript troops

Evidence

On hearing that a new Wahhabi revolt had occurred in ‘Asīr in the south of Hijaz, Mehmed Ali decided that it was time to try out his new troops. In July 1823 he wrote to Ibrahim Pasha telling him to form a regiment out of the newly formed battalions and to dispatch it immediately to Arabia even if the soldiers had not yet finished their proper courses of training. — Khaled Fahmy, All the Pasha_s Men_ Mehmed Ali, his…, 457