Adolf Eichmann

Source: The Star
Like Himmler, Nazi leader Adolf Eichmann was another of the Holocaust’s main orchestrators.
He was an instrumental part of the 1942 Wannsee Conference, at which Nazi leaders first coordinated on the plan for the Holocaust. Once things were in motion, Eichmann helped preside over the mass deportation of Jews into concentration camps, tirelessly working to organize the transportation, murder, and disposal of Holocaust victims, largely Jews hailing from Eastern Europe.

Source: WordPress
After the war, Eichmann eluded capture for 15 years but was eventually tried and hanged for his crimes in 1962.
Showing neither hatred nor mental illness during his trial, Eichmann provided evidence that, according to Nazi hunter Simon Wiesenthal, you don’t need to be sadistic or mentally ill to kill millions; a desire to “do your duty” will suffice.
One of Eichmann’s Nazi comrades once heard him say that he would “leap laughing into the grave because the feeling that he had five million people on his conscience would be for him a source of extraordinary satisfaction.”

Eichmann on trial. Source: Jewish Currents