Pedzisa mutsara unotevera: MuHondo Yenyika I, vaOttoman vakatsigira Germany neCentral Powers. Mukurwisa kweMesopotamia kuzorwa neCentral Powers, mauto eBritish akapinda munyika uye pakutanga akatambura kukundwa kukuru mumaoko emauto eTurkey panguva ye
Kukombwa kweKut (1915<unk>1916). Zvisinei, pashure paikoku vaBritain vakatanga kuwana simba, uye vakabetserwazve netsigiro yavaArabhu vomunzvimbomo navaAsiria. Muna 1916, vaBritain nevaFrance vakagadzira hurongwa hwekuparadzaniswa kweWest Asia pashure pehondo pasi peSykes-Picot Agreement. Mauto eBritain akaunganazve ndokutora Baghdad muna 1917, uye akakunda vaOttoman. Chibvumirano chokumisa hondo chakasainwa muna 1918. Mauto eBritain akarasikirwa nevarwi 92 000 muhondo yokuMesopotamia. Kurasikirwa kwevaOttoman hakuzivikanwi asi vaBritain vakabata vasungwa vehondo vanosvika 45 000. Pakupera kwa 1918, vaBritain vakanga vaisa varume 410 000 munharaunda yacho, avo 112 000 vavo vaiva varwi.