In August, Wilder-Neligan led his battalion during the early fighting of the Hundred Days Offensive, which began on 8 August 1918 with the Battle of Amiens. During the fighting for Lihons on 10 August, he brought his battalion up into close support using an unconventional method. He moved forward of his unit, carrying a signalling lamp on his back, using it to transmit orders to his unit to halt or advance. By this method he brought his battalion into a position from which it could support his old unit, the 9th, with only one casualty. From his advanced position, he could see that the flank of the 9th had been held up, and he sent his strongest company to assist in the capture of Crépey Wood.