The Battle of Le Mesnil-Patry during the Second World War, was the last attack by an armoured battle group conducted by Canadian troops in Normandy in June 1944. The Queen's Own Rifles of Canada of the 8th Canadian Infantry Brigade of the 3rd Canadian Division, supported by the 6th Armoured Regiment of the 2nd Canadian Armoured Brigade attacked the village of Le Mesnil-Patry in Normandy, to advance southwards towards the higher ground of Hill 107 to the west of Cheux. The attack was intended to support a larger operation by the 50th (Northumbrian) Infantry Division and the 7th Armoured Division to capture the city of Caen and to advance in the centre of the bridgehead next to the First US Army. The battle was a German defensive success but the greater German objective of defeating the invasion by a counter-offensive also failed.

The Queen's Own Rifles of Canada is a Primary Reserve regiment of the Canadian Armed Forces, based in Toronto. The regiment is part of 4th Canadian Division's 32 Canadian Brigade Group. It is the only reserve regiment in Canada to currently have a parachute role. The regiment consists of the reserve battalion, the Regimental Association, and the Regimental Band and Bugles. The official abbreviation is The QOR of C, but the name is often abbreviated to QOR.