““In 1825, however, Sultan Mahmud II issued a fatwa stating that it was the duty of every Muslim to serve in the Ottoman military while reinstating the Nizam-ı Cedid Army in 1826, in an attempt to replace the Janissaries. When the Janissaries revolted in 1826 and sacked parts of Constantinople, the Sultan crushed the revolt, leading to the death of 4,000 Janissaries, and the subsequent dismantling of the old military force.””