On 1 October 1917 at Broodseinde Ridge, Nulla was hit by a mortar and suffered leg injuries. He was repatriated to England for six months, returning to France in March 1918 just in time to be sent to the Somme meet the German Spring Offensive. He saw action in and around Bailleulmont and Millencourt and was with the 4th Division when Australian and British troops stopped the German advance in hard-fought battles at Dernancourt on the Ancre River, retaking positions the Entente had previously held including the very same Dernancourt trenches Nulla had occupied in 1916.