Battles of the Marne

General Alexander von Kluck alters his army's path southeast of Paris, exposing its right flank to Allied forces defending the French capital.

The French Sixth Army attacks General von Kluck's flank near the Ourcq River, officially initiating the First Battle of the Marne.

Parisian taxicabs are requisitioned to rapidly transport roughly 4,000 French infantry reserves directly to the frontline.

British and French forces advance into a 30-mile gap between the German First and Second Armies, threatening them with encirclement.

German forces complete their retreat and entrench along the Aisne River, ending the First Battle of the Marne and ruining the Schlieffen Plan.

Germany launches its final major offensive of WWI near the Marne, which is repelled by a decisive Allied counter-offensive.