During the First World War, Bayer turned its attention to the manufacture of chemical weapons including chlorine...

Originally shared by Alexander Light (HumansAreFree)

During the First World War, Bayer turned its attention to the manufacture of chemical weapons including chlorine gas, which was used to horrendous effect in the trenches. It also built up a "School for Chemical Warfare".

After Hitler came to power, IG Farben worked in close collaboration with the Nazis, becoming the largest profiteer from the Second World War: http://humansarefree.com/2016/09/complete-history-of-bayer-one-of.html