World War I stands as one of history’s most senseless spasms of carnage, defying rational explanation. In a riveting, suspenseful narrative with haunting echoes for our own time, Adam Hochschild brings it to life as never before. He focuses on the long-ignored moral drama of the war’s critics, alongside its generals and heroes. Thrown in jail for their opposition to the war were Britain’s leading investigative journalist, a future winner of the Nobel Prize for Literature, and an editor who, behind bars, published a newspaper for his fellow inmates on toilet paper. These critics were sometimes intimately connected to their enemy hawks: one of Britain’s most prominent women pacifist campaigners had a brother who was commander in chief on the Western Front. Two well-known sisters split so bitterly over the war that they ended up publishing newspapers that attacked each other.