With the creation of the Franco-Russian Alliance and the failure of the Reinsurance Treaty in the late nineteenth century, Germany needed a strategy for fighting a two-front war. In response, Field Marshal Count Alfred von Schlieffen produced a study that represented the apex of modern military planning. His Memorandum for a War against France, which incorporated a mechanized cavalry as well as new technologies in weaponry, advocated that Germany concentrate its field army to the west and annihilate the French army within a few weeks. For generations, historians have considered Schlieffen's writings to be the foundation of Germany's military strategy in World War I and have hotly debated the reasons why the plan, as executed, failed. In this important volume, international scholars reassess Schlieffen's work for the first time in decades, offering new insights into the renowned general's impact not only on World War I but also on nearly a century of military historiography. The contributors draw on newly available source materials from European and Russian archives to demonstrate both the significance of the Schlieffen Plan and its deficiencies. They examine the operational planning of relevant European states and provide a broad, comparative historical context that other studies lack. Featuring fold-out maps and abstracts of the original German deployment plans as they evolved from 1893 to 1914, this rigorous reassessment vividly illustrates how failures in statecraft as well as military planning led to the tragedy of the First World War.

The existence of the Schlieffen plan has been one of the basic assumptions of twentieth-century military history. It was the perfect example of the evils of German militarism: aggressive, mechanical, disdainful of politics and of public morality. The Great War began in August 1914 allegedly because the Schlieffen plan forced the German government to transform a Balkan quarrel into a World War by attacking France. And, in the end, the Schlieffen plan failed at the battle of the Marne. Yet it has always been recognized that the Schlieffen plan included inconsistencies which have never been satisfactorily explained. On the basis of newly discovered documents from German archives, Terence Zuber presents a radically different picture of German war planning between 1871 and 1914, and concludes that, in fact, there never really was a `Schlieffen plan'.

The Schlieffen Plan was the name given after World War I to the theory behind the German invasion of France and Belgium on 4 August 1914. In 1905-1906 Field Marshal Alfred von Schlieffen, the Chief of the Imperial Army German General Staff from 1891-1906, had devised a deployment plan for a war-winning offensive, in a one-front war against the French Third Republic. After the war, the German official historians of the Reichsarchiv and other writers, described the plan as a blueprint for victory. Post-war writing by senior German officers and the Reichsarchiv historians managed to establish a commonly accepted narrative that it was Schlieffen’s successor Helmuth von Moltke the Younger’s failure to follow the blueprint, rather than German strategic miscalculation, that resulted in four years of attrition warfare. In 1953, renowned historian Prof. Gerhard Ritter Schlieffen’s unearthed Schlieffen’s papers during a visit to the United States, and he published his findings in the book Der Schlieffenplan: Kritik eines Mythos, presented here in its 1958 English translation, The Schlieffen Plan: Critique of a Myth. It proved to be an important historical publication, as it set in motion a period of revision, when the details of the supposed Schlieffen Plan were subjected to scrutiny and contextualisation. In Der Schlieffen Plan, Prof. Ritter presents the full text of Schlieffen’s military testament, and the relevant parts of other memoranda which shed light on the evolution of the Plan. They are preceded by Professor Ritter’s masterly exposition of their content and significance, while his accompanying notes add to the illuminating effect. “FOR two generations the Schlieffen Plan has been a magic phrase, embodying one of the chief mysteries and ‘might have beens’ of modern times. The mystery is cleared up and the great ‘If’ analysed in Gerhard Ritter’s book—a striking contribution to twentieth-century history.”—B. H. Liddell Hart

The existence of the Schlieffen Plan has been one of the basic assumptions of 20th-century military history. Terence Zuber challenges this assumption and presents a different picture of German war planning between 1871 and 1914. He concludes that there never really was a Schlieffen Plan.

As July turned to August in 1914, all the Great Powers of Europe mobilized their armies and then went to war with one another. It would take more than 50 months for peace to return, and the better part of a century to heal many of the wounds. Germany acted only near the end of a chain of actions by other nations, but German troops moved first and set the pattern for the war. They smashed through neutral Belgium before thrusting deeply into France, coming close to knocking France out of the war, and soon were making huge inroads in Russia as well. It was a remarkable performance for an army outnumbered by its foes. Yet four years later the German Empire was swept away, its army a shell, its people starving, its government in chaos. How did the leaders of Imperial Germany come to make the decisions that committed their nation to an all-or-nothing war based on a highly risky strategy? This book explores the background of the decisions, what those who made them knew and thought, what they failed to look at and why. It explains the Prussian Great General Staff (Großer Generalstab) and the part it played in planning and preparing for war. It follows the action of August and the first part of September 1914 to show where they went wrong and how other options could have achieved Germany’s aims with far lower risk and cost. These options were realistically available and the book probes why the nation’s leaders failed to consider or rejected them. The German leaders in 1914 weren’t Hitler. They valued security over conquest and didn’t go to war to expand their empire. They weren't the first to light the fuze that led to war. They thought and acted as leaders very often do. We can understand them in terms of patterns we see all around us, patterns we even see in ourselves. Their decisions had results that were uniquely catastrophic, but the way they were reached was quite ordinary. The Plan That Broke the World explains it all briefly and crisply, in non-technical terms, drawing on the latest research. There are 35 images, many unique to this book, to illustrate specific aspects of the story. Four charts and thirteen high-quality maps, all but one drawn especially for this book, present complex information in forms that are immediately understandable. There’s no other book like it. The book Web site is whatweretheythinking.williamdoneil.com/theplanthatbroketheworld The Plan That Broke the World is a case study in the What Were They Thinking? series. The series Web site is whatweretheythinking.williamdoneil.com/

If wars were wagered on like pro sports or horse races, the Germany military in August 1914 would have been a clear front-runner, with a century-long record of impressive victories and a general staff the envy of its rivals. Germany's overall failure in the first year of World War I was surprising and remains a frequent subject of analysis, mostly focused on deficiencies in strategy and policy. But there were institutional weaknesses as well. This book examines the structural failures that frustrated the Germans in the war's crucial initial campaign, the invasion of Belgium. Too much routine in planning, command and execution led to groupthink, inflexibility and to an overconfident belief that nothing could go too terribly wrong. As a result, decisive operation became dicey, with consequences that Germany's military could not overcome in four long years.

The Real German War Plan, 1904–14 fundamentally changes our understanding of German military planning before the First World War. On the basis of newly discovered or long-neglected documents in German military archives, this book gives the first description of Schlieffen's war plans in 1904 and 1905 and Moltke's plans from 1906 to 1914. It explodes unfounded myths concerning German war planning, gives the first appraisal of the actual military and political factors that influenced it, shows that there never was a 'Schlieffen Plan' and reveals Moltke's strategy for a war against Russia from 1909 to 1912. Tracing the decline in the German military position and the recognition by 1913 that Germany would be forced to fight outnumbered on both the eastern and western fronts, it is an essential read for anyone with an interest in the First World War.