The important 1916 Anglo-French offensive comprising the battles of the Somme marked a change in the Allies' relationships, with the British beginning to play a more important role. From contemporaries to the present the Somme has also produced a number of controversies. Was the terrible bloodshed justified by the results? Were the tactics used the best possible under the circumstances? Was the new technology, especially the tank, used as effectively as possible? This book shows the current state of historians' interpretations of the Somme. The initial section of the book presents the historical background of the offensive and lays out the major interpretative disputes about it. The section identifies scholars and works in each school of thought, enables readers to determine where a specific work fits in the spectrum of views, and provides cross references to the bibliography. The second section provides an annotated bibliography of more than 700 entries.