How Did The Schlieffen Plan Fail

The actual Schlieffen Plan began forming in 1905. The general idea was to find a new general plan that would take into account the many new factors that had arisen since the Franco-Prussian of 1870 and the next year. Factors such as Germany's diplomatic isolation, which left Austria-Hungary a dependable partner and created a problem of a two-front war since Russia and France were staunch allies. There were military and technological issues to deal with, new forms of communication, and the growing sizes of national armies. The plan's designed to compensate the belief that German forces would be outnumbered by around five to three, and then a war would not be winnable. It was an offensive Plan to avoid that. The original Plan was that 7/8 of
the troops deployed to the west and they were going to circumvent to French Defenses on the Franco-German border by marching through Belgium and the Netherlands. The remaining troops would be at the border and would draw the French into battles with them and then would get outflanked. This would encircle France forces to the south. After this success, they could send most of their troops to fight Russia, but there was no plan in place for fighting Russia, just the French part. Schrieffer was no longer Chief of Staff when the war broke out, he had been succeeded by Helmut von Moltke ,who was a German Field Marshal, he then made changes to The Plan which were so that they only invaded Belgium and not the Netherlands.
He wanted to lead the Netherlands as a supply corridor since itself might be isolated.
The plan failed and Germany was forced to fight a two-front war. A two front war is fighting that takes place in two locations at the same general time, Eastern Front: which included the countries of Austria-Hungary, Germany, and Russia and the Western Front included the countries of France, Belgium, Great Britain, and the Dominion Forces of the British Empire(Australia, Canada, India, New Zealand, Newfoundland, and South Africa) they developed into a French Warfare. The Plan had failed because there was never enough German troops to achieve the encirclement of Paris, not saying there were not enough troops but that for so many casualties they could not replace each one, and driving the remaining French troops toward the south, technically they had a lot of troops but the number of casualties could not be replaced. The original Schlieffen Plan dismissed Russia as a strong enemy because Russia had just lost to Japan in the Russo-Japanese War, and the Plan basically ignored how much Russia had modernized in the past decade. This forced Moltke to force troops from the western front to the eastern front before he wanted to, but some of the troops refused to go, He then was forced to take troops from Belgium making this take a lot of time and he already had problems with making the generals obey his exact orders in general. This all lead to what Germany wanted to avoid the most a two-front war of
attrition.