Block 14 at Ouvrage Hochwald in 1940
The French established the fortification to provide time for their army to mobilize in the event of attack, allowing French forces to move into Belgium for a decisive confrontation with Germany. The success of static, defensive combat in World War I was a key influence on French thinking. French military experts extolled the Maginot Line as a work of genius, believing it would prevent any further invasions from the east.
While the fortification system did prevent a direct attack, it was strategically ineffective, as the Germans invaded through Belgium, going around the Maginot Line and attacked it from the rear.
In late 1944 and early 1945 the Germans defended the line from the onrushing allies, which again attacked it from the rear.