This book explores Siegfried Sassoon's writing of the twenties, thirties and forties, demonstrating the connections between trauma and nostalgia in a culture saturated with the anxieties of war.Informed by the texts of Freud, W.H.R. Rivers and other psychological writers of the early twentieth century, as well as contemporary theorists of nostalgia and trauma, this book examines the pathology of nostalgia conveyed in Sassoon's unpublished poems, letters and journals, together with his published work. It situates his ongoing anxiety about 'Englishness', modernity, and his relation to modernist aesthetics, within the context of other literary responses to the legacy of war, and the threat of war's return, by writers including Edmund Blunden, Robert Graves and T. E. Lawrence.