After Bluecoat, the Canadians' Operation Totalize completed the breakout and much of the German army was trapped in the Falaise Pocket. 21st Army Group then began a rapid advance across northern France, with Guards Armoured driving over in under 24 hours to seize a bridge over the River Somme at Corbie on 31 August. It carried on into Belgium, liberating Brussels by the end of 3 September. Opposition hardened at the Albert Canal, but the Guards seized a bridgehead over it.