This interdisciplinary volume examines how movement between the margins and mainstream of warfare is impacting contemporary conflict. Actors, battlefields, and practices traditionally considered within the margins of war – such as propagandists, and private companies – have increasingly found themselves at the centre of conflicts, while traditional practices, actors, and locations of war – such as geographically bounded battlefields and uniform clad soldiers engaging their enemy in direct battle – have become increasingly marginalized. Anchored in the war studies tradition with its prudent, multidisciplinary approach, this volume offers a fresh conceptual frame for an overdue investigation into how the changing practices in contemporary wars permit us to reevaluate our understandings of fighters and battlefields.