What was Operation Overlord primarily known for?

Operation Overlord is primarily known for being the Allied invasion of Normandy, a crucial military operation during World War II. This operation marked the beginning of the liberation of Western Europe from Nazi occupation. Commencing on June 6, 1944, known as D-Day, the operation involved a massive amphibious assault on five beachheads along the French coastline.

The significance of this operation lies in its scale and the coordination required to execute such a complex attack involving multiple Allied nations. It was not just the immediate military action that defined Overlord, but also the extensive planning and logistical preparations that preceded D-Day, as well as the subsequent campaign that eventually led to the liberation of France and the defeat of Nazi Germany. Thus, while the liberation of France is a key outcome of Operation Overlord, the operation itself is fundamentally recognized for the invasion of Normandy and the opening of a Western front against the Axis powers.