What kind of torture and treatment of death did the Jehovah's witnesses?

There were beheadings, firing squads, gas chambers, starvation, etc. I have even read about times when Witness prisoners were made to stand in sub-freezing temperatures while water was poured on them until they froze to death. The United States Holocaust Museum is a good place to learn about NAZI torture, not only of JW's, but all sorts of people who were under NAZI oppression. Here is the web address: http://www.ushmm.org/