Watch on SFlix. On June 6, 1944, the Allied Forces executed Operation Overlord, the largest seaborne invasion in history, storming the beaches of Normandy. This pivotal event, known as D-Day, liberated France and Western Europe. A new documentary features interviews with historians, experts, and eyewitnesses, providing detailed insights into the events leading up to this crucial day that played a vital role in bringing an end to World War II.