"From the moment the first machine gun rang out over the Western Front, one thing was clear: mankind's military technology had wildly surpassed its medical capabilities. Bodies were battered, gouged, hacked, and gassed. The First World War claimed millions of lives and left millions more wounded and disfigured. In the midst of this brutality, however, there were also those who strove to alleviate suffering. Lindsey Fitzharris's The Facemaker tells...