The Meuse-Argonne Offensive, lasting from 26 September 1918 to 11 November 1918, constituted the largest and bloodiest engagement of American forces in World War I. Part of a series of concentric attacks devised by Marshal Ferdinand Foch against German positions on the Western Front in the autumn of 1918, it aimed at the capture of the important railway junction at Mézières, which supplied a large portion of the German forces in France. German forces in this area did not enjoy the luxury of trading space for time, and they were under orders to defend to the last. The offensive is usually said to have resulted in 120,000 American casualties, including 26,000 dead, most of them having fallen in the offensive’s first three weeks. Combat in the Meuse-Argonne was extremely intensive, and had a profound effect on all who participated in it, but whether it impacted the development of American military doctrine is debatable. The Meuse-Argonne is controversial in the sense that American historians have tended to emphasize its importance in overall operations on the Western Front in 1918, while many European historians have dismissed it as insignificant. Comparatively little has been published about the offensive in either article or book form. Only four general studies have been published—in 1919, 1987, 2007, and 2008—but none of these works are comprehensive in scope. Scattered writings exist on various aspects of the offensive, from celebrated heroes, such as Alvin C. York, to individual episodes, such as the saga of the Lost Battalion or the attack on Montfaucon. Numerous articles have been published, mostly in the 1930s and 1960s, about the role of artillery and gas warfare units in the offensive; however, aside from a single-volume collection of essays to be published in 2014, not much has been written about infantry combat, tanks and aircraft, or the problems of logistics and command. Next to nothing has appeared in any language on German or French participation in the Meuse-Argonne. Published American personal accounts exist in abundance, however, and vast archival sources remain untapped in the National Archives and at the US Army Heritage and Education Center in Carlisle, PA.