Which event is commonly referred to as D-Day?

D-Day is specifically associated with the Allied invasion of Normandy on June 6, 1944, during World War II. This operation was a pivotal moment in the war, as it marked the beginning of the liberation of Western Europe from Nazi control. The term "D-Day" itself is a military designation used to denote the day on which a combat attack or operation is set to commence. The Normandy landings involved a massive amphibious assault by American, British, Canadian, and other Allied forces, landing on the beaches of Normandy, France.

The successful execution of this operation laid the groundwork for the subsequent Allied advance into German-occupied Western Europe, making it one of the most significant military events of the 20th century. The scale and complexity of the landing, along with its strategic importance, have cemented D-Day in historical memory.

The other events listed, such as the Pacific Island Hopping Campaign, the Battle of Midway, and the Siege of Stalingrad, were critical in their own right but pertain to different theaters of the war and do not hold the same association with the term "D-Day." Each of those events played important roles in the overall conflict, but the specific reference to D-Day is firmly anchored to the