What Was Gleiwitz At The Night?

In her memoir, Night, Elie Wiesel describes the horrible experiences he and other Jews had the Holocaust. One of such experiences was a “death” march to the Gleiwitz Concentration Camp.
When the Nazis decided to evacuate Auschwitz, the camp where Eliezer and his father were brought from Sighet, they forced prisoners to run 50 miles to Gleiwitz during a severe snowstorm as many die along the way. “The Wiesels and their fellow prisoners are forced to run through a snowy night in bitter cold over a forty-two-mile route to Gleiwitz. Elie binds his bleeding foot in strips of blanket. Inmates who falter are shot.” After arrival, Elie says “We stayed at Gleiwitz for three days. Three days without food or drink.” Elie is surprised when one of the concentration camps he is sent to for a short amount of time, provided nothing to eat or drink, causing him and other Jews to starve. Nazis place Jews in a barrack, forcing them to “trod over numbed bodies, trampled wounded faces.” People in the barrack were so numerous that cause many suffocate under the pressure of body mass.
On the third day, Nazis put the prisoners on cattle cars again to Buchenwald. The cars start with a hundred Jews onboard but only 12 stay alive to reach the end. But when they make it to Buchenwald Eliezer’s father dies of dysentery, while Eliezer survives until they are set free.