The German collapse in the second part of 1918 came with a rapidity that no senior figure on the Allied side had expected. Active planning to continue the war into 1919 was underway, American troops were flooding into Europe in unprecedented numbers and, in preparation for continuing hostilities, factories were churning out weapons, ammunition and equipment in huge quantities. Despite yielding the initiative to the Allies after the failure of Operation Marneschutz-Reims in mid-July and being forced back from one position to another all along the Western Front, the German army was still fighting hard, inflicting very heavy casualties yet, suddenly, on 1 October, the German government requested an armistice and within six weeks the war was over. Why had it happened so quickly? How did an apparently defeated army cause the Allies so many casualties that late summer and autumn? What was the origin of the ‘Stab in the Back’ myth and what were the long-term consequences of its general acceptance in post-war Germany? This presentation will explore these issues and provide answers.