On the morning of 6 September, the French Sixth Army attacked the German First Army near the River Ourcq while the French Fifth Army and British Expeditionary Force advanced into the gap between the German First and Second Armies. On 9 September, German Chief of Staff Helmuth von Moltke ordered a withdrawal, marking the transition from mobile warfare to the long period of trench warfare that followed.
21st June 1919: The German High Seas naval fleet is scuttled at Scapa Flow
21st June 2019