Ancient sources preserve scant information about the conflict, but The Social War (91-88 BCE) is widely recognised as having been immensely important in the unification of Roman Italy. In response to the conflicting accounts and contradictory interpretations of modern scholarship, this book provides a new, comprehensive reassessment of the events surrounding the Social War, analysing the immediate context of the conflict as well as its causes, legacy, and role in reshaping Roman and Italian identity.