When the assault crossing of the Canal du Nord began on 27 September, the 1/4th Londons watched as the rest of the division advanced across their front along the far bank of the canal, before following up themselves on the near (west) bank against slight opposition. The advance was now a pursuit, held up only by German rearguards. On 6 October, patrols from the 1/4th Londons entered Aubencheul-au-Bac without opposition, taking the line as far as the Sensée Canal.