Leopold Engleitner, Austrian Holocaust survivor, author, and educator (born 1905)

Leopold Engleitner was an Austrian conscientious objector, as one of Jehovah's Witnesses, and a concentration camp survivor who spoke publicly and with students about his experiences. He was the subject of the documentary Unbroken Will. Before his death, Engleitner was the world's oldest known male Buchenwald, Niederhagen and Ravensbrück concentration camp survivor and the oldest male Austrian.

The Holocaust, known in Hebrew as the Shoah, was the genocide of European Jews during World War II. From 1941 to 1945, Nazi Germany and its collaborators systematically murdered some six million Jews across German-occupied Europe, around two-thirds of Europe's Jewish population. The murders were committed primarily through mass shootings across Eastern Europe and poison gas chambers in extermination camps, chiefly Auschwitz-Birkenau, Treblinka, Belzec, Sobibor, and Chełmno in occupied Poland. Separate Nazi persecutions killed millions of other non-Jewish civilians and prisoners of war (POWs); the term Holocaust is sometimes used to include the murder and persecution of non-Jewish groups.