What is Bruno's big discovery when he comes home in chapter 1? * the boy in the striped pajamas

Explanation:

Bruno comes in, carrying his things, to meet the cook,   His parent told his son, like him, his brother, his mother, and his aunt, are going to work for his dad. Bruno does not really understand everything his dad's doing, however he assumes it's a critical aspect because he's wearing a cool uniform.

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