The Rape of Belgium was a series of systematic war crimes, especially mass murder and deportation, by German troops against Belgian civilians during the invasion and occupation of Belgium in World War I. The neutrality of Belgium had been guaranteed by the Treaty of London (1839), which had been signed by Prussia. However, the German Schlieffen Plan required that German armed forces advance through Belgium (thus violating its neutrality) in order to outflank the French Army, concentrated in eastern France. The German Chancellor, Theobald von Bethmann Hollweg, dismissed the treaty of 1839 as a "scrap of paper". Throughout the war, the German army systematically engaged in numerous atrocities against the civilian population of Belgium, including the intentional destruction of civilian property; German soldiers murdered over 6,000 Belgian civilians, and 17,700 died during expulsion, deportation, imprisonment, or death sentence by court. The Wire of Death, maintained by the German Army to kill civilians trying to flee the occupation, was used to murder over 3,000 Belgian civilians, and 120,000 were enslaved and deported to Germany. German forces destroyed 25,000 homes and other buildings in 837 communities in 1914 alone, and 1.5 million Belgians (20% of the entire population) fled from the invading German army. In some places, particularly Liège, Andenne and Leuven, but firstly Dinant, atrocities were premeditated. In Dinant, the German army believed the inhabitants were as dangerous as the French soldiers themselves. German troops, afraid of Belgian guerrilla fighters, or francs-tireurs ("free shooters"), burned homes and murdered civilians throughout eastern and central Belgium, including Aarschot (156 murdered), Andenne (211 murdered), Seilles, Tamines (383 murdered), and Dinant (674 murdered). German soldiers murdered Belgian civilians indiscriminately and with impunity, with victims including men, women, and children. In the Province of Brabant, nuns were forcibly stripped naked under the pretext that they were spies or men in disguise.