The Canadian Corps kept up the pressure, breaking through the old defence lines beyond Monchy-le-Preux on 28 and 30 August, with CCLXXXII Bde contributing to the barrages, and then storming the Drocourt-Quéant Switch Line on 2 September. For this operation CCLXXXII was one of seven AFA brigades supporting 4th Canadian Division, brought up from reserve for the attack. With the support of the barrage and tanks, all went well to begin with, but as soon as the attacking battalions reached the crest of the ridge beyond the first objective they were halted by German machine guns outside the range of the field artillery. However, with the 'D–Q' line breached, the Germans were forced to retreat that night; the following morning's follow-up attack was cancelled and First Army began a pursuit towards the Canal du Nord.