Final answer:
Operation Overlord, also known as D-Day, was the operation designed to liberate France from German control. It occurred on June 6, 1944, and was the largest amphibious assault in history.
Step-by-step explanation:
The operation designed to liberate France from German control was Operation Overlord, also known as D-Day. It occurred on June 6, 1944, and involved the Allied forces landing on the beaches of Normandy. General Dwight D. Eisenhower led the invasion, which was the largest amphibious assault in history.