Kacper Pempel / Reuters

Halina Brzozowska, 82, who was registered with camp number 86356, holds a picture of herself which was taken during the war, as she poses for a portrait in Warsaw Jan. 12, 2015. Brzozowska was 12 years old during the Warsaw Uprising when her family were sent to a camp in Pruszkow. She and her 6-year-old sister were then moved by train to Auschwitz-Birkenau. Brzozowska said that it was hard to say what had happened to them, that they were taken from their homes, family, and lost their childhood.