<P> The military of the Ottoman Empire remained an effective fighting force until the second half of the eighteenth century , when it suffered a catastrophic defeat against Russia in the 1768 - 74 war . Selim III came to the throne with an ambitious effort in military reforms in 1789 . He failed . Selim III was replaced by Mahmud II in 1808 who established martial law of Alemdar Mustafa Pasha . His first task was to ally with the Janissaries in order to break the power of the provincial governors . He then turned on the Janissaries and removed them from power during Auspicious Incident in 1826 . Efforts for a new system ( 1826 -- 1858 ) began following the Auspicious incident . </P>
<P> The military of the Ottoman Empire remained an effective fighting force until the second half of the eighteenth century , when it suffered a catastrophic defeat against Russia in the 1768 - 74 war . Selim III came to the throne with an ambitious effort in military reforms in 1789 . He failed . Selim III was replaced by Mahmud II in 1808 who established martial law of Alemdar Mustafa Pasha . His first task was to ally with the Janissaries in order to break the power of the provincial governors . He then turned on the Janissaries and removed them from power during Auspicious Incident in 1826 . Efforts for a new system ( 1826 -- 1858 ) began following the Auspicious incident . </P>
what led to the ottoman military decline of the nineteenth century
what led to the ottoman military decline of the nineteenth century
defeat against Russia in the 1768 - 74 war
defeat against Russia in the 1768 - 74 war