> The maginot line failed because they ... didn't continue it along the border with their friend (belgium) - so the enemy simply drove around it.
Wikipedia says this is a myth:
> It is a myth however that the Maginot Line ended at the Belgian border and was easy to circumvent.[2] The fortifications were connected to the Belgian fortification system, of which the strongest point was Fort Eben-Emael.
[2] Mosier, J. The Blitzkrieg Myth: How Hitler and the Allies Misread the Strategic Realities of World War II, HarperCollins, 2004, pp. 2, 38.