D-Day: History in an Hour

Midnight, Tuesday 6 June 1944: the beginning of D-Day, the operation to invade Nazi-occupied Western Europe and initiate the final phase of World War II. A vast undertaking, it involved 12,000 aircraft and an amphibious assault of almost 7,000 vessels. 160,000 troops would cross the English Channel during Operation Overlord, paving the way for more than three million allied troops to enter France by the end of August 1944.