Concept

Second Battle of the Marne

Summary
The Second Battle of the Marne (Seconde Bataille de la Marne; 15 – 18 July 1918) was the last major German offensive on the Western Front during the First World War. The attack failed when an Allied counterattack, supported by several hundreds of tanks, overwhelmed the Germans on their right flank, inflicting severe casualties. The German defeat marked the start of the relentless Allied advance which culminated in the Armistice with Germany about 100 days later. Following the failure of the German spring offensive to end the conflict, Erich Ludendorff, Chief Quartermaster General, believed that an attack through Flanders would give Germany a decisive victory over the British Expeditionary Force (BEF). To shield his intentions and draw Allied troops away from Belgium, Ludendorff planned for a large diversionary attack along the Marne. The battle began on 15 July when 23 German divisions of the First and Third armies – led by Bruno von Mudra and Karl von Einem – assaulted the French Fourth Army under Henri Gouraud east of Reims (the Fourth Battle of Champagne (4e Bataille de Champagne). The U.S. 42nd Division was attached to the French Fourth Army. Meanwhile, 17 divisions of the German Seventh Army, under Max von Boehn, aided by the Ninth Army under Johannes von Eben, attacked the French Sixth Army led by Jean Degoutte to the west of Reims (the Battle of the Mountain of Reims (Bataille de la Montagne de Reims)). Ludendorff hoped to split the French in two. East of Reims the French Fourth Army had prepared a defense in depth to counter an intense bombardment and infiltrating infantry. Their main line of resistance was four to five km behind the front, beyond the range of the enemy field guns, it was a continuous trench line – to prevent infiltration – dug on a reverse slope so it could not be overlooked by enemy artillery observers on the ground. Between the front and the main line of resistance were two lines of strong points, again mostly on reverse slopes.
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