The French established an unbreakable maginot line. Why did it fall short in the end?

Because the construction of maginot line cost a lot of manpower, material resources and funds, the French army had no funds and ability to support armaments, which led to the failure of the war. And maginot line didn't play a role, but became a witness to the French fiasco.

1. maginot line was built to fight a protracted war with the Germans.

After World War I, in order to avoid being attacked by Germany again, France wanted to build maginot line on the border so that it could fight a protracted war with the Germans. The idea is full and the reality is very skinny. It took the French 12 years to basically complete maginot line.

12 years, this line of defense was really built, not bad. Maginot line has all kinds of recreational facilities and defensive functions. Such a thought, the French army can really rely on maginot line and the Germans to fight a protracted war.

Second, maginot line became a French joke in World War II.

France imagined that the Germans would attack through maginot line, but in fact, after the outbreak of World War II, the Germans did not attack France directly through maginot line, but bypassed maginot line and attacked France from the Ardennes Forest.

It is precisely because the German army acted in the opposite direction that maginot line didn't exert its defensive ability at all. The German army broke through France in just over 30 days, making maginot line, which was carefully constructed by the French army, a big joke. The construction of maginot line cost France a lot of time and money, resulting in no more funds for military construction, which is also the reason why France failed in the war.

France built maginot line, but I didn't expect the Germans to attack France from maginot line. So in the end, maginot line really fell short.