The Schlieffen Plan was the blueprint for Germany’s army to avoid a two-front war with Russia and France. It was supposed to be the solution for a quick victory against arch enemy France by invading Belgium and the Netherlands to circumvent French defenses.
Helmut von Moltke adapted the original plan by Alfred von Schlieffen and ultimately failed when the Germans were beaten at the Battle of the Marne. The video explains the numerous reasons why the Schlieffen Plan was doomed to fail.