Military of the Ottoman Empire
Overview
 
The history of military of the Ottoman Empire can be divided in five main periods. The foundation era covers the years between 1300 (Byzantine expedition) and 1453 (Fall of Constantinople
Fall of Constantinople
The Fall of Constantinople was the capture of the capital of the Byzantine Empire, which occurred after a siege by the Ottoman Empire, under the command of Ottoman Sultan Mehmed II, against the defending army commanded by Byzantine Emperor Constantine XI...

), the classical period covers the years between 1451 (enthronement of Sultan Mehmed II
Mehmed II
Mehmed II , was Sultan of the Ottoman Empire for a short time from 1444 to September 1446, and later from...

) and 1606 (Peace of Zsitvatorok), the reformation period covers the years between 1606 and 1826 (Vaka-i Hayriye
The Auspicious Incident
The Auspicious Incident was the forced disbandment of the centuries-old Janissary corps by Ottoman sultan Mahmud II in June 1826....

), the modernisation period covers the years between 1826 and 1858 and decline period covers the years between 1861 (enthronement of Sultan Abdülaziz
Abdülâziz
Abdülaziz I or Abd Al-Aziz, His Imperial Majesty was the 32nd Sultan of the Ottoman Empire and reigned between 25 June 1861 and 30 May 1876...

) and 1918 (Armistice of Mudros
Armistice of Mudros
The Armistice of Moudros , concluded on 30 October 1918, ended the hostilities in the Middle Eastern theatre between the Ottoman Empire and the Allies of World War I...

).
The earliest form of the Ottoman military was an steppe-nomadic cavalry force.
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