The criticism of the Maginot Line begins with its failure to extend the defenses from Switzerland to the sea. Edinburgh Castle and St Michael's Mount supply an analogy: their walls remain continuous even where steep terrain already obstructs an attacker. A route judged unlikely to be used can still become an approach the defender must cover. The analogy supports the case for defensive continuity, though its application to a modern fortified line is disputed.
Notable Point · 3:57:35-3:58:54
Why leave an open interval in a fortified frontier?
The case for extending the Maginot Line rests on covering possible approaches even where terrain appears to obstruct an attacker.