What was the german fortification that ran nearly 400 miles across germany’s western border

The Siegfried Line or West Wall was a defense system during World War II over 630 kilometers, which consisted of more than 18,000 bunkers, tunnels and tank traps. It began at the height of the town of Cleveris, on the southern border with Holland, and ended at the height of Weil am Rhein on the border with Switzerland. The original objective of the line was propagandistic. In this way, the Germans saw the Siegfried Line as an assertion that Germany's foreign policy was defensive, and that they felt safe in the face of an imminent French invasion, as the Germans claimed.

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