The Western Allies of World War II launched the largest amphibious invasion in history when they assaulted Normandy, located on the northern coast of France, on 6 June 1944. The invaders were able to establish a beachhead as part of Operation Overlord after a successful "D-Day," the first day of the invasion.

Answer this question based on the passage: where did the battle of normandy take place? Let's have some stream of consciousness first.
The important part for answering this question is: The Western Allies of World War II launched the largest amphibious invasion in history when they assaulted Normandy, located on the northern coast of France, on 6 June 1944. So, the answer is Normandy , located on the northern coast of France.