World War II
One of the earliest uses of methamphetamine was during World War II when the German military dispensed it under the trade name Pervitin. It was widely distributed across rank and division, from elite forces to tank crews and aircraft personnel. Chocolates dosed with methamphetamine were known as Fliegerschokolade ("flyer's chocolate") when given to pilots, or Panzerschokolade ("tanker's chocolate") when given to tank crews. From 1942 until his death in 1945, Adolf Hitler was given frequent intravenous injections of methamphetamine by his personal physician, Theodor Morell as a treatment for depression and fatigue. It is possible that it was used to treat Hitler's speculated Parkinson's disease, or that his Parkinson-like symptoms which developed from 1940 onwards were related to use of methamphetamine.