Joe, if the Germans in 1870 attacked through the Maginot line general area, and in WW1 attacked elsewhere, and if per what you say it would be stupid to attack again thorough the same place, where would it be logical to attack again? Again through the Maginot area, after all they hadn't attacked through there for the last 70 years.

Besides, look at a map. One of the historically most fortified areas in Western Europe at the time was the Flanders-North-Northeast of France region, since Louis XIV. France WAS fortified on all it's borders, only it did not have an Hadrian's Wall everywhere.

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