Following the Allied invasion of Europe on D-Day, the regiment landed in France on July 23. The regiment saw its first action in the Second World War during Operation Totalize, on August 8, 1944. The operation was launched under the cover of darkness. To aid in navigation at night, searchlights had been pointed at the cloud cover to provide some illumination. 40 mm Bofors guns were also firing tracers along the line of advance to aid the attack. Despite these precations, the 28th, accompanied by The Algonquin Regiment, became disoriented and navigated away from Hill 195, which was its objective, and steered instead towards Hill 140, but did not reach the hill before daybreak. As a result, when daylight came, the unit was located in an exposed valley with units of the 12th SS Panzer Division concealed in the high ground. The two Canadian regiments were attacked by the 12th SS, who were equipped with 88 mm flak guns and Tiger tanks, among other heavy weapons. Lieutenant-Colonel Worthington was killed during the battle, and the survivors of the regiment managed to break contact with the 12th SS, after suffering 133 casualties and losing 48 out of 52 tanks. The 28th would return to action only a week later, contributing to the closing of the Falaise Pocket during Operation Tractable, which saw the destruction of the German Seventh Army and the capture of a great number of enemy soldiers and equipment.