We know from the ancient epics that war has been entangled with literature since the earliest times. But war has also had a profound influence on the broader field of literary studies. Indeed, numerous twentieth- and twenty-first-century literary theories have been shaped by warfare, while contemporary critical engagements have given rise to several recurring and emerging concepts that together structure the field of literary war studies. The introductory chapter seeks to inscribe war and literature within the larger frame of the history of knowledge. It traces the emergence of the theory and history of knowledge as a distinct discipline from its French origins in Foucault’s archaeology to the contemporary German Wissensgeschichte and it explores the place of war literature within this tradition. The chapter argues that literature serves as an archive of military knowledges and a distinct form of knowledge in its own right. And it examines war as a disruptive and generative force that at once disturbs established concepts and theories and produces new modes of knowing, thinking, and writing.