The D-Day invasion, or Operation Overlord, in 1944 was significant for the Allied invasion of Europe. Launched on June 6, 1944, it marked a critical turning point in World War II, as Allied forces stormed the beaches of Normandy, France. This massive amphibious assault involved thousands of troops and was pivotal in establishing a Western front against Nazi Germany. The successful landings allowed for the liberation of Western Europe from Nazi occupation, and ultimately contributed to the defeat of Germany in 1945.