The paper dwells upon the main weakness of the entire arrangement. It was that the Line did not extend the length of Belgian border – the likely route of invaders. The line actually stretched from Strasbourg to Montmédy only. Having invested so tremendous sums in construction of Maginot Line facilities French establishment developed the so-called Maginot mentality that did not allow them to consider other ways of warfare. In 1935 the Minister of War in his speech to the Chamber of Deputies stated: “How can we still believe in the offensive when we have spent thousands of millions to establish a fortified barrier?”
Furthermore in addition to their reluctance to offensive tactics, French military leadership failed to utilize offensive properties of armor, although developed excellent tanks and vehicles toward the beginning of 1940 German invasion. In spite of the desperate protestations of such notable officers as Charles de Gaulle French military leadership remained stubbornly addicted to the ideas of the passive defense.