World War II. The world watched Germany’s army move with terrifying speed. They called it Blitzkrieg — lightning war. Soldiers marched for days without sleep. Without food. Without stopping. How? Hidden inside their packs were small white pills called Pervitin — an early form of methamphetamine. The German military ordered 35 million doses. The drug erased exhaustion and fear. But it also erased something else — humanity. Behind every “unstoppable” advance were men pushed beyond their limits by