There recently was a death of a 98 year-old lady named Irena. During WWII, Irena got permission to work in the Warsaw Ghetto, as a Plumbing/Sewer specialist. She had an 'ulterior motive ' ...

She KNEW what the Nazis' plans were for the Jews. Irena smuggled infants out in the bottom of the tool box she carried, and she carried in the back of her truck a burlap sack (for larger kids). She also had a dog in the back that she trained to bark when the Nazi soldiers let her in and out of the ghetto. The soldiers of course wanted nothing to do with the dog and the barking covered the kids'/infants' noises.

During her time of doing this, she managed to smuggle out and save 2500 kids/infants. She was caught, and the Nazis broke both her legs, arms and beat her sever  (read more)