A War of Nerves is a history of military psychiatry in the twentieth century--an authoritative, accessible account drawing on a vast range of diaries, interviews, medical papers, and official records, from doctors as well as ordinary soldiers. It reaches back to the moment when the technologies of modern warfare and the disciplines of psychological medicine first confronted each other on the Western Front, and traces their uneasy relationship through the eras of shell-shock, combat fatigue, and post-traumatic stress disorder.

At once absorbing historical narrative and...