This book seeks to reconstruct the totality of the military experience by pursuing three questions. What were the cultural and ideological boundaries that framed the world as Civil War soldiers imagine it? How did soldiers respond to those moments when they felt hemmed in by the sentimental expectations of society, the military’s need for discipline, and the pleas for help from home? How did soldiers intellectually and practically navigate moments of doubt, when the nature of knowledge and its relationship to truth was overturned by war?