"The Nazi regime preached an ideology of physical, mental, and moral purity. But as Norman Ohler reveals in this gripping new history, the Third Reich was saturated with drugs. On the eve of World War II, Germany was a pharmaceutical powerhouse, and companies such as Merck and Bayer cooked up cocaine, opiates, and, most of all, methamphetamines, to be consumed by everyone from factory workers to housewives to millions of German soldiers. In fact,...