https://en.wikipedia.org/wiki/Werner_Heisenberg
The German nuclear weapons program, known as Uranverein, was formed on 1 September 1939, the day World War II began in Europe
Uranverein (Uranium Club) or Uranprojekt (Uranium Project)
https://en.wikipedia.org/wiki/German_nuclear_program_during_World_War_II
Alsos Mission
https://en.wikipedia.org/wiki/Alsos_Mission