Nulla's 45th Battalion was in the Fourth Division's assault on the Hindenburg Line in the First Battle of Bullecourt in April 1917 at Noreuil. In the May they moved to the front in Flanders, Belgium and they saw action on day one (10 June 1917) and throughout the Battle of Messines. Nulla suffered shrapnel wounds in two separate incidents but stayed in the front line and saw action through the summer and autumn at Broodseinde, Ploegsteert Wood, Wambeke, Westhoek and Polygon Wood all theatres of the Battle of Passchendaele. During this period command of the 4th division passed to Maj. Gen. Ewen Sinclair-Maclagan, who inspected Nulla and his mates during the Passchendaele campaign.