Hermine Braunsteiner Ryan was an Austrian SS Helferin and female camp guard at Ravensbrück and Majdanek concentration camps. She was the first Nazi war criminal to be extradited from the United States to face trial in West Germany. Braunsteiner was known to prisoners of Majdanek concentration camp as "the Mare" because she was said to have kicked and stomped on prisoners, thrown children by their hair onto trucks that took them to be murdered in gas chambers, hanged young prisoners, and beaten prisoners to death.