Bloodier than Verdun, the battles for Fortress Przemyl were pivotal to victory on the Eastern Front during the early years of World War I. Control of the fortress changed hands three times during the fall of 1914. In 1915, the Austro-Hungarian armies launched three major offensives to penetrate the Russian encirclement and relieve the 120,000 trapped in the besieged fortress. Drawing on myriad sources, historian Graydon A. Tunstall tells of the impossible conditions facing the garrison: starvation, "horse-meat" diets, deplorable medical care, prostitution, alcoholism, dismal morale, and a...