The Introduction sketches out the key themes of the book, offers a justification for focusing on the identity of the American soldier as a key issue in the Army’s post–Cold War transformation and introduces the reader to literature on ‘warrior culture’. Just as Army leaders and ordinary soldiers often meant very different things when they spoke about warriors, so contemporary historians, anthropologists and classicists have used the term in various ways. Thus, the latter part of the Introduction spends some time examining how the term has evolved and been deployed in different contexts.