abstract
| - The 1918 Spring Offensive or Kaiserschlacht (Kaiser's Battle), also known as the Ludendorff Offensive, was a series of German attacks along the Western Front during World War I, beginning on March 21, 1918 which marked the deepest advances by either side since 1914. The Germans had realised that their chance of victory was at hand. They also had the advantage in numbers afforded by the nearly 50 divisions freed by the Russian surrender (the Treaty of Brest-Litovsk). There were four separate German attacks, codenamed Michael, Georgette, Gneisenau and Blücher-Yorck, and launched in that order. Michael was the main attack, which was intended to break through the Allied lines, outflank the British forces which held the front from the Somme River to the English Channel and defeat the British Army. Once this was achieved, it was hoped that the French would seek armistice terms. The other offensives were subordinate to Michael, and were designed to divert Allied forces from the main offensive on the Somme. However, the strategic goals of the operation were lacking. No clear single objective was established before the start of the offensives and once the operations were underway, the targets of the attacks were constantly changing according to the battlefield (tactical) situation. The Germans were at first unable to move up supplies and reinforcements fast enough to maintain their advance. By late April 1918, the danger of a German breakthrough was at an all time high. The German Army had suffered heavy casualties and now occupied valued ground as well as with the manpower reserves now available kept the British backed into the Channel ports. In August 1918, the Allies attempted a counter-offensive, but it failed resulting in the exhaustion of the French army. The offensive resulted in the British being driven from ground they held since 1914, the French defeat in the Second Battle of the Marne and the Allied armistice that September.
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