Final answer:
The 3rd Canadian Infantry Division captured the region of Normandy on D-Day. They were part of the Allied forces that landed on Juno Beach during the massive amphibious assault that contributed to the eventual liberation of Paris and the downfall of Nazi occupation in Western Europe.
Step-by-step explanation:
The region stormed and captured on D-Day, June 6, 1944, by the 3rd Canadian Infantry Division was Normandy. This historic event, known as D-Day or Operation Overlord, involved a massive and strategic amphibious landing by American, British, and Canadian forces along a fifty-mile stretch of the Normandy coast in France.
The objective was to establish a beachhead from which to launch further operations into German-occupied Europe. The invasion saw over 156,000 troops, including the 3rd Canadian Infantry Division who landed on Juno Beach, facing formidable German defenses but ultimately succeeding in securing a critical foothold on the European continent.
By the end of August 1944, Paris had been liberated, marking the beginning of the end for Nazi control in Western Europe.