"The Light of Days" by Judy Batalion tells the untold story of Jewish women resistance fighters in Hitler's ghettos, particularly in Nazi-occupied Poland. These women, often referred to as "kashariyot" or "ghetto girls," played crucial roles in the resistance, engaging in activities like smuggling, sabotage, and providing essential support. The book highlights their courage, resourcefulness, and the often-overlooked contributions of women during the Holocaust.