The Germans used metamphetamine during World War 2. They gave it nicknames Panzerschokolade ("tank chocolate"), Stuka-Tabletten ("Stuka tablets"), Herman-Göring-Pillen, or Flieger-Marzipan ("pilot's marzipan"). It was freely available under the brand name "Pervitin" until 1941. From then on, you needed a prescription in order to purchase it.