The author begins by surveying fragmentary medieval sources and sets out a method for reconstructing a long-obscured engagement from tradition, monuments, and documents. He then examines the political causes and traces the campaign that brought the opposing armies together, describes the chosen ground and preliminary dispositions, and delivers a detailed narrative of the combat itself. Attention is given to problems of numerical estimates and topographical uncertainty, and the book closes with a tactical analysis showing how terrain, weapons, and formations combined to determine the result.