Pedzisa mutsara unotevera: Musi wa1 Nyamavhuvhu 1915, Mackinolty akaendeswa kuAustralia Imperial Force, kuti atungamire boka revamwe gumi nevatatu vemakanika sekusimbiswa kweAustralia Flying Corps contingent inoshanda mumushandirapamwe weMesopotamia. Akabva muMelbourne mazuva mapfumbamwe gare gare akatasva RMS "Persia", ndokusvika muBasra musi wa1 Gunyana. Chikwata chaMackinolty chakabva chabatana neNo. 30 Squadron Royal Flying Corps (pakutanga Mesopotamian Half Flight AFC), iyo yakaenda kuguta reKut mushure mekutorwa kwayo nemauto eBritish Empire muHondo yeEs Sinn. Chikamu ichi chakatora chikamu muHondo yeCtesiphon munaNovember, uye chakaronga kuendeswa kwezvinhu kuvarwi veBritain neIndia mu
Kut mukati mokukombwa kwakatangira muna December 1915 kusvikira muna April akatevera.