At the outbreak of war in the summer of 1914 Ludendorff was appointed Deputy Chief of Staff to the German Second Army under General Karl von Bülow. His assignment was largely due to his previous work investigating defenses of Liège, Belgium. At the beginning of the Battle of Liège, Ludendorff was an observer with the 14th Brigade, which was to infiltrate the city at night and secure the bridges before they could be destroyed. The brigade commander was killed on 5 August, so Ludendorff led the successful assault to occupy the city and its citadel. In the following days, two of the forts guarding the city were taken by desperate frontal infantry attacks, while the remaining forts were smashed by huge Krupp 42-cm and Austro-Hungarian Škoda 30.5-cm howitzers. By 16 August, all the forts around Liège had fallen, allowing the German First Army to advance. As the victor of Liège, Ludendorff was awarded Germany's highest military decoration for gallantry, the Pour le Mérite, presented by Kaiser Wilhelm II himself on 22 August.