There have been many War criminals through out the holocaust time period. Simon wiesthal was an Australian who helped bring more than 1,000 Nazi war criminals to justice after world war II.
During war, Simons family had either died or were killed in Soviet/German camps, while Simins was working with Adolf Eichmann. Simons is one out of tons of war criminals. The holocaust was a perfect example of genocide, genocide is a strategy used by murderers. War crimals is just another name for a person who took place in a crime or did the crime.