Mezue ahịrịokwu na-esonụ: N'agbata ọnwa Mee na Disemba afọ 1916, ndị agha nke 13 (Western) Division rụgharịrị ma nwetaghachi ngwá agha ha iji kwadebe maka ịgawa n'ebe ugwu iji weghara Baghdad. N'ọnwa Julaị, a buliri Major-General Maude n'ọkwa ka ọ bụrụ onye isi ndị agha agbasawanye ma kpọgharịa aha Mesopotamian Expeditionary Force. N'ọnọdụ ya, Brigadier General Cayley, onye bụbu ọchịagha nke 39th Brigade, ka e buliri elu ka ọ bụrụ onye isi nke ngalaba ahụ. N'abalị iri na abụọ n'ọnwa Disemba n'afọ 1916, ngalaba ahụ si na Sheik Sa'ad na Kut. Na
Agha nke abụọ nke Kut, nkewa ahụ nyere aka chụpụ ndị agha Ottoman n'obodo ahụ. Mgbe ha kwụsịtụrụ obere oge, ndị agha ahụ gara n'ebe ugwu, gafee Osimiri Diyala, ma sonye na njide nke Baghdad na 11 Machị 1917. Mgbe e jidere Baghdad, Ngalaba nke 13 (Western) lụrụ ọtụtụ agha iji mee ka ndị Briten chịkwaa Baghdad vilayet. Nke a gụnyere ịlụ ọgụ na Dellis Abbas (27<unk>28 Machị 1917), Duqma (29 Machị 1917), Nahr Kalis (9<unk>15 Eprel 1917), ngafe nke Adhaim (18 Eprel 1917) na omume nke Shatt al 'Adhaim (30 Eprel 1917). N'agbanyeghi na ndị Britain anaghị eme ihe ọ bụla iji gaa n'ihu, nkewa ahụ lụrụ ọgụ na nke abụọ na nke atọ nke Jabal Hamrin (16-20 Ọktọba 1917 na 3-6 Disemba 1917).