Final answer:
Operation Overlord was the major invasion of French beaches at Normandy during WW2 that helped the Allies defeat Germany. The success of Operation Overlord was due to the heroism and sacrifice of the troops, as well as the overwhelming superiority of men and equipment. This operation allowed the Allies to push inland and ultimately gain control of France.
Step-by-step explanation:
The major invasion of French beaches at Normandy that helped the Allies punch holes in the German defense, leading to Germany's surrender in WW2, was Operation Overlord.
The success of Operation Overlord was due to the heroism and sacrifice of the first waves of troops who secured the beach against mines and German machine guns. The overwhelming superiority of men and equipment allowed the Allies to break through the German defenses and push inland. By the end of the first day, 150,000 men had cleared a small strip of the coast.
Over the next two months, a million US and British troops arrived in France and joined the fight against the retreating German line. Paris was reached in August 1944 and by October, the Allies controlled most of France.