The question as posed is unanswerable. The Ottoman Empire fought in nearly 2,000 different battles in its nearly 600 year history. You may need to specify which battle or which war the question refers to.
22,850,000
19 million troops. Allied powers had 42 million troops mobilized central powers had 23 million troops mobilized
The British and French fielded about 570,000 troops (British Empire: 489,000 France: 79,000) of which 59% were killed. The Ottoman Empire fielded 315,500 troops of which 60% were killed.
The Ottoman Empire had 29 provinces.
The Ottoman Empire had four capitals.
The treatment of Armenians in the Ottoman Empire has 684 pages.
Germany mobilized 13.25 million troops in World War 1. Surprisingly this was more than Russia did, but by a small margin. Still, based of Russia's population, one might believe Russia would have had a greater number than Germany.
Estimates vary but in total there were proably about 250,000 troops mobilized on both sides in the English Revolution of 1688.
The answer you are likely looking for is "the Ottoman Empire", but this is incorrect. Turkey was the dominant constituent entity of the Ottoman Empire and the only remaining part after the Treaty of Versailles and the League of Nations cut away all other parts of the empire.Turkey replaced the Ottoman Empire after Mustafa Kemal Ataturk led a rebellion using the Ottoman army to overthrow the sultan and install himself as the first President of Turkey. He then rallied the remaining Ottoman army to his banner and ejected Greek, Bulgarian,Armenian, and Kurdish troops within the new Turkish borders. This war, which culminated with a signed treaty (Treaty of Lausanne) to have these enemies recognize the nascent Turkish Republic built on the ruins of the Ottoman Empire, was popularly called the War of Turkish Independence. Ataturk removed many of the agencies and departments of the Ottoman Empire and the country underwent a restructuring, but the Ottoman Empire did not "grant" independence to Turkey; it became Turkey.
One of the major challenges faced by the Ottoman Empire was determining how to govern many different regions.
Many democratic reforms were instituted.
The Ottoman Empire fought in many wars. You may have to be more specific (such as a time frame, opponents, battle-region, etc.).