The Second Battle of the Marne, or Battle of Reims (July 15 to August 5, 1918) was the last major German offensive on the Western Front. It failed when an Allied counterattack led by French forces overwhelmed the Germans, inflicting severe casualties.
BackgroundFollowing the failures of the Spring Offensive to end the war, Erich Ludendorff, Chief Quartermaster-General and virtual military ruler of Germany, believed that an attack through Flanders would give Germany a decisive victory over the British Expeditionary Force (BEF), the most potent Allied force on the Western Front at that time. To shield his intentions and draw Allied troops away from Belgium, Ludendorff planned for a large diversionary attack along the Marne. German attackThe battle began on 15 July when 23 German divisions of the First and Third armies, led by Mudra and Karl von Einem, assaulted the French Fourth Army under General Gouraud east of Reims. Meanwhile, 17 divisions of the German Seventh Army, under Boehm, aided by the Ninth Army under Eben, attacked the French Sixth Army led by Degoutte to the west of Reims. Ludendorff hoped to split the French in two. The British XXII Corps and 85,000 American troops joined the French for the battle. The German attack to the east of Reims was stopped on the first day, but the attack to the west broke through the French Sixth Army and advanced nine miles before the French Ninth Army held in reserve, helped by American, British, and Italian troops, stalled the advance on July 17. Allied counter-offensiveThe German failure to break through allowed Ferdinand Foch, the Allied Supreme Commander, to proceed with the planned major counter-offensive on 18 July; 24 French divisions, joined by other Allied troops including 8 large US divisions, and 350 tanks attacked the recently formed German salient. The French were entirely successful, with Mangin's Tenth Army and Degoutte's Sixth Army advancing five miles on the first day alone. Berthelot's Fifth Army and De Mitry's Ninth Army, launched additional attacks in the west. The Germans ordered a retreat on July 20 and were forced all the way back to the positions where they had started their Spring Offensives earlier in the year. The Allied counter-attack petered out on 6 August when well-entrenched German troops ground it to a halt. The disastrous German defeat led to the cancellation of Ludendorff's planned invasion of Flanders and was the first step in a series of Allied victories that ended the war. See alsoFurther reading
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