Operation Michael was the major German military offensive that began the Spring Offensive on 21 March 1918. It was launched from the Hindenburg Line, in the vicinity of Saint-Quentin, France. Its goal was to break through the Allied (Entente) lines and advance in a north- westerly direction to seize the Channel Ports, which supplied the British Expeditionary Force (BEF) and to drive the BEF into the sea. Two days later General Erich Ludendorff, the chief of the German General Staff, adjusted his plan and pushed for an offensive due west, along the whole of the British front north of the River Somme. This was designed to first separate the French and British Armies before continuing with the original concept of pushing the BEF into the sea. The offensive ended at Villers-Bretonneux, to the east of the Allied communications centre at Amiens, where the Allies managed to halt the German advance; the German Army had suffered many casualties and was unable to maintain supplies to the advancing troops. Much of the ground fought over was the wilderness left by the Battle of the Somme in 1916. The action was therefore officially named The First Battles of the Somme, 1918. The failure of the offensive marked the beginning of the end of the First World War for Germany. The arrival in France of large reinforcements from the United States replaced Entente casualties but the German Army was unable to recover from its losses before these reinforcements took the field. Operation Michael failed to achieve its objectives and the German advance was reversed during the Second Battle of the Somme, (21 Aug – 3 Sep 1918) in the Allied Hundred Days Offensive. The unstoppable advance of the Allied armies during the Hundred Days Offensive of 1918 caused a sudden collapse of the German armies and persuaded the German commanders that defeat was inevitable. The German government surrendered in the Armistice of 11 November 1918, and the terms of peace were settled by the Treaty of Versailles in 1919. Charles Harlington suffered a gun shot wound on 28 Mar 1918 at Roye. As a consequence he had his right arm amputated above his elbow (6 inches below the shoulder). He remained in France until 25 April before he returned to England. He was discharged from the army on 20 Mar 1919.