World War I casualties
The total number of deaths includes from 9 to 11 million military personnel. The civilian death toll was about 8 million, including about 6 million due to war-related famine and disease. The Triple Entente (also known as the Allies) lost about 6 million military personnel while the Central Powers lost about 4 million. At least 2 million died from diseases and 6 million went missing, presumed dead. This article lists the casualties of the belligerent powers based on official published sources.
Ottoman casualties of World War I
If looked at without breakdowns, the total Ottoman losses run almost as high as 25% of the population — approximately 5 million out of population of 21 million. To be more exact, the 1914 census gave 20,975,345 as the population size, of which 15,044,846 was part of the Muslim millet, 187,073 part of the Jewish millet, 186,152 not belonging to any millet, and the remaining 5,557,274 shared by other millets.