The Atlantic Wall is one of the largest defensive structures of the 20th century.

The Atlantic Wall is one of the largest defensive structures of the 20th century. Nazi Germany built the line during the Second World War between 1942 and 1945 to make an allied invasion of the Western European continent from the sea impossible.

You can see various shots from captured German film made earlier in war. The film is showing the emplacements along Hitler's Atlantic wall. Also shots of Field Marshal Erwin Rommel on tour of installations.