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This uniform resembles Bruno’s fathers uniform the most. It has all of the buttons and trinkets like Bruno’s fathers. It also has the Nazi symbol band on the arm. In the army they have uniforms to come together as one. They are not doing these things for personal gain they are working for one reason, to help their cause. The uniforms also show organization in an army. They are consistent and the same. They all have the same tools that would be needed on the battlefield. They also show you who is a friend or foe. In the Jewish death camps they all wore the same thing so guards could tell if they were Jews. They also wore the same thing to show that the Jews were all the same and that no one Jew was different from the next. They were all equally pitiful to the Nazis. Their clothes in the story were all the same and they were terrible. They were ugly and dirty. They were like rags compared to the guards uniforms.
Uniforms also show placement in different positions. A high ranked officer would have a different uniform to show that they were above some people. But in the end you are all working for one cause.