“Night” is the name of this book written by Elie Wiesel in 1960. He was a survivor from Holocaust and the book tells the story of the hardships that him and his father endured during World War II.
Wiesel and his father decide to join the main group marching to a different camp because they think that it will give them a better opportunity for survival. They feared that, if they stayed, they would be exterminated.
Two days after the evacuation, the patients who stayed in the hospital were liberated by the Russians as explained in the chapter five: “After the war, I learned the fate of those who had remained at the infirmary. They were, quite simple, liberated by the Russians, two days after the evacuation”.