Final answer:
The reference material provided does not offer specific information about the third day in the Gleiwitz barracks or Elie's actions to save his father, but highlights the broader resistance efforts and the tragic circumstances faced by prisoners during the Holocaust.
Step-by-step explanation:
The question pertains to the events that took place on the third day in the Gleiwitz barracks, and the dangers faced by Elie's father during the Holocaust. However, specific details about the third day in the barracks and Elie's efforts to save his father are not provided in the reference information.
Understanding the broader historical context, it is known that many prisoners faced extreme conditions, including starvation, disease, and violence. Assistance and resistance took various forms during this era, with both individual acts of heroism and organized uprisings, like the ones in the Warsaw ghetto and in concentration camps such as Sobibor.