Kammala wannan jumla: Daular Ottoman ta shiga Yaƙin Duniya na ɗaya a gefen Ƙasar Tsakiya kuma a ƙarshe an ci ta. Ottomans sun sami nasarar kare mashigar Dardanelles a lokacin yakin Gallipoli (1915<unk>1916) kuma sun sami nasarar farko a kan sojojin Burtaniya a cikin shekaru biyu na farko na yakin Mesopotamian, kamar
Siege na Kut (1915<unk>1916); amma juyin juya halin Larabawa (1916<unk>1918) ya juya yanayin da Ottomans a Gabas ta Tsakiya. A cikin yakin Caucasus, duk da haka, sojojin Rasha sun sami rinjaye tun daga farko, musamman bayan yakin Sarikamish (1914-1915). Sojojin Rasha sun ci gaba zuwa arewa maso gabashin Anatoliya kuma sun mallaki manyan biranen a can har sai sun janye daga Yaƙin Duniya na ɗaya tare da Yarjejeniyar Brest-Litovsk bayan Juyin Juya Halin Rasha (1917). A lokacin yakin, Armeniya na daular an tura su zuwa Siriya a matsayin wani ɓangare na kisan kare dangi na Armeniya. A sakamakon haka, kimanin 600,000 zuwa fiye da miliyan 1, ko har zuwa Armeniya miliyan 1.5 aka kashe. Gwamnatin Turkiyya ta ki amincewa da abubuwan da suka faru a matsayin kisan kare dangi kuma ta bayyana cewa Armeniya ne kawai aka tura daga yankin gabashin yaki. An kuma yi yakin neman kisan kare dangi a kan sauran kungiyoyin 'yan tsiraru na daular kamar Assuriyawa da Helenawa. Bayan Armistice na Mudros a ranar 30 ga Oktoba 1918, Allied Powers masu nasara sun nemi raba jihar Ottoman ta hanyar Yarjejeniyar Sèvres ta 1920.