On the afternoon of Aug. 18, 1944, the 4th Canadian Armoured Division redeployed its forces in response to a directive from the corps commander to prevent the enemy from escaping the Falaise Pocket.

The division was to establish blocking positions along the River Dives between the villages of Trun and Chambois. The Polish Armd. Div. was to secure Chambois, linking up with the American 90th Infantry Div.

American General Omar Bradley’s decision to stop Gen. George S. Patton’s 3rd Army at Argentan, France, on Aug. 12, 1944, gave the German armies in the Falaise Pocket a chance to escape encirclement.

Montgomery accepted Bradley’s decision and ordered the Canadians to capture Falaise before turning east to close the gap at Trun and Chambois.

While the Canadians fought towards Falaise, the Americans—to the west—were advancing more quickly. By the evening of Aug. 8 it was clear the Germans had failed in their attempt to cut off General George S. Patton’s 3rd U.S. Army with an attack through Mortain to the Normandy coast.

The second phase of Operation Totalize, which began on the afternoon of Aug. 8, 1944, was intended to bring 4th Canadian and 1st Polish Armoured divisions to the high ground overlooking the town of Falaise in Normandy. The divisions were to advance together on either side of the Caen-Falaise highway, employing tank-infantry battle groups supported by their own self-propelled guns and the medium artillery regiments.