Kammala wannan magana: A lokacin Yaƙin Duniya na ɗaya, Ottomans sun goyi bayan Jamus da Ƙasar Tsakiya. A yakin Mesopotamian da aka yi da Tsakiyar Tsakiya, sojojin Birtaniya sun mamaye kasar kuma sun fara shan wahala a hannun sojojin Turkiyya a lokacin yakin basasa na shekara ta 1914.
Siege na Kut (1915<unk>1916). Koyaya, bayan wannan Birtaniyya ta fara samun rinjaye, kuma an ƙara taimaka musu da goyon bayan Larabawa da Assuriyawa na gida. A shekara ta 1916, Burtaniya da Faransa sun tsara shirin raba Yammacin Asiya bayan yakin karkashin yarjejeniyar Sykes-Picot. Sojojin Burtaniya sun sake tattarawa kuma sun kama Bagadaza a 1917, kuma sun kayar da Ottomans. An sanya hannu kan yarjejeniyar tsagaita wuta a shekara ta 1918. Birtaniya ta rasa sojoji 92,000 a yakin Mesopotamiya. Ba a san asarar Ottoman ba amma 'yan Burtaniya sun kama jimillar fursunonin yaƙi 45,000. A ƙarshen 1918, Birtaniya ta tura mutane 410,000 a yankin, wanda 112,000 daga cikinsu sojoji ne.