By 1939 the SS had masterminded a vast network of state-sponsored slavery across Nazi-occupied Europe through an innocuous-sounding division called the SS Business Administration Main Office. This office was overseen by Heinrich Himmler but required partnerships. These included many companies from the private sector, including IG Farben, Volkswagen, Heinkel, and Steyr-Daimler-Puch. The most significant partner was Albert Speer’s Ministry of Armaments and War Production.

