60 years since the opening of the second front On Sunday, June 6, the West will mark the 60th anniversary of the most famous Allied military operation in World War II. In 1944, on this day, the landing of American, British and Canadian troops in Normandy began - the anti-Hitler coalition opened a second front. For the Allies, this date is perhaps the second most important event of the war after V-Day, Victory Day, celebrated there on May 8th.