Why did Germany invade Belgium in 1914?

Germany invaded neutral Belgium in 1914 as a core component of the Schlieffen Plan, a military strategy designed to solve the problem of a potential two-front war against France and Russia.12

German military leaders believed that Russia would require approximately six weeks to mobilize its vast armies due to its limited infrastructure. To exploit this, the plan dictated that Germany should remain on the defensive in the east while concentrating the bulk of its forces in the west to deliver a rapid, decisive blow against France. By launching an offensive through neutral Belgium, the German army aimed to bypass France’s heavily fortified eastern frontier, sweep through northern France, and capture Paris to force a quick surrender before turning its full attention to the Russian threat.12

Although the German government knew the violation of Belgian neutrality was indefensible and would likely draw Great Britain into the conflict, they prioritized this strategic calculation to secure a swift victory in the west.3