The way Wiesel describes the atmosphere at Buna tells about the way that he has to live in the camp and the clothing and the surroundings of the camp.
The book night is a memoir of Elie Wiesel that how he spend a part of his life in the Nazi German camp at Auschwitz with his father and how the atmosphere and the surroundings of that camp were.
The word well-dressed here is used s a satire to the clothes that they were given to wear. the fact that it looked clean was an important aspect. In the memoir, he talks that the clothes given to the prisoner would have been better and that's how he felt.
Also the atmosphere of Buna with so many deaths surrounding the camp and silence, he also thought that the clothes may be of the dead with how dirty and worn out they were.
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