During the Holocaust, Irena Sendler worked in the Warsaw Ghetto as a plumber. She courageously smuggled babies out of the Ghetto in her tool box and carried larger children in her sack. She also trained her dog to bark when the Nazi soldiers were near, which muffled the sounds of the crying children. She helped save more than 2,500 children until soldiers caught and beat her severely, breaking both of her legs. She survived & tried to connect any parents with their children. Sadly, most of the parents had been killed so the kids were placed into foster homes or adopted.Read more about Irena here.