By the first week of March 1915, food supplies inside the besieged fortress of Przemyśl were almost exhausted. Most of the horses that could be spared had been eaten. Bran, sawdust and bone meal were used to eke out the dwindling stock of flour. Cats were nowhere to be seen – they too had been eaten. A middle-sized dog fetched 20 crowns, if its owner could be persuaded to part with it. Even mice were being traded. The hospital was filled to overflowing with collapsing people. As one of the doctors tending them observed, the most shocking thing about the...