Rubuta ci gaba don wannan sakin layi - Bayan wannan, an yanke shawarar canja wurin AIF zuwa Turai don shiga cikin fadace-fadace a yammacin Front. A watan Maris na 1916 Brigade na 3, tare da sauran Anzac Corps sun tashi daga Misira zuwa Faransa. A ranar 23 ga Yuli 1916, brigade ta shiga cikin babban yaƙin farko lokacin da aka sadaukar da ita ga fadace-fadace a Somme a Pozières, inda Rukunin 1 na Ostiraliya ya ci gaba, ya kama ƙauyen. A watan Disamba na 1916, Sinclair-MacLagan ya ba da umurni ga Brigadier Janar Gordon Bennett, wanda ya jagoranci brigade don sauran yakin. Daga baya, a cikin 1917 da 1918 an yi yaƙe-yaƙe Bullecourt, Ypres, Menin Road
, Passchendale, Hazebrouck, Amiens da kuma tare da Hindenburg Line kafin yakin ya ƙare a watan Nuwamba 1918.