Despite the enduring popular image of the blitzkrieg of World War II, the German Army always depended on horses. It could not have waged war without them. While the Army’s reliance on draft horses to pull artillery, supply wagons, and field kitchens is now generally acknowledged, D. R. Dorondo’s Riders of the Apocalypse examines the history of the German cavalry, a combat arm that not only survived World War I but also rode to war again in 1939. Though concentrating on the...