The battle fought on June 6, 1944, known as D-Day, was a pivotal moment during World War II. Allied forces launched a massive invasion of Nazi-occupied France, landing on the beaches of Normandy. This operation, codenamed Operation Overlord, involved extensive planning and coordination among the United States, Britain, Canada, and other allied nations. It marked the beginning of a major offensive to liberate Western Europe from Nazi control. The success of D-Day was crucial in establishing a foothold for Allied troops in Europe, ultimately leading to the defeat of Nazi Germany in 1945 and significantly altering the course of the war.