 Nyorai kuenderera mberi kweiyi ndima - Mushure mekunge kupihwa kweLegion kwemasevhisi emauto maviri evatasvi vemabhiza kwakarambwa nehurumende yeNew Zealand zvichitevera kutanga kweHondo Yenyika Yekutanga, Twisleton akanyoresa muNew Zealand Expeditionary Force. Akagoverwa kuOtago Mounted Rifles Regiment, iyo yaakasvika kuGallipoli inenge mwedzi mushure mekubhururuka paAnzac Cove musi wa25 Kubvumbi 1915. Mutungamiri, akaenderera mberi netsika dzake dzokunyora tsamba dzeHondo yeBoer, nguva dzose achirondedzera upenyu mumakomba mukunyora tsamba kumusha. Sezvaakanga aita muzvinyorwa zvake zvakapfuura, vakuru vakuru vokuBritain vaiwanzotukwa. Akapiwa Military Cross nokuda kwemabasa ake munguva yeGallipoli Campaign, iyo yakamuona achibatanidzwa muhondo yeHill 60. Akataurwawo mumashoko. Akarwara nedysentery uye akabudiswa muGallipoli muna September 1915. 