One of the most significant changes made in the military field was the abolition of the Janissary corps in 1829. Sultan Mahmud II wanted to make a drastic reform in the military area. The Sultan explained that he would build a new army to be trained and organized in the direction of modern techniques. Mahmud II declared that he would not remove the Janissary corps, but that the janissaries would be present in the new army with a certain amount of troops. When this decision was announced, the janissaries launched a great rebellion. The military units affiliated with the palace who took advantage of the new war technology opened fire on the janissaries. Many janissaries lost their lives in this attempt of rebellion, and the rest of them surrendered or fled. This event, known as Vakayı Hayriye, enabled the Ottoman Empire to get rid of the last traces of the traditional military system (Lewis, 1998, p. 81). A new army was established by Sultan Mahmud II under the name of Asakar-i Mansure-i Muhammediye. Thus, the Ottoman state formed a completely “modern” army system.