To make D-Day a success, the Allies thought they might have to break through formidable German defences. One unconventional idea was a "giant firework".

Learn about the greatest fortification project of the 20th century, Hitler’s Atlantic Wall To protect occupied Europe from an Allied invasion, Hitler demanded the construction of a defensive ...

Fearing an Allied invasion of occupied Europe, Adolf Hitler ordered in 1942 the building of a 5,000-kilometre (3,100-mile) coastal defence system studded with bunkers, gun emplacements, tank traps ...

Adolf Hitler called it the "Atlantic Wall", and there are still many traces of it, littering beaches from the Bay of Biscay to the sub-Arctic fjords. Allied military planners had many challenges ...