Chapter 13: What history do you think Bruno's father is referring to that he must correct.

Bruno's father is alluding to the fact that he believes the Germans have always been the superior race. He is also referring to Germany's great embarrassment after WWI.

'Boring?' said Father. 'A son of mine calling the study of history boring? Let me tell you this, Bruno,' he went on, leaning forward
and pointing his knife at the boy, 'It's history that's got us here today. If it wasn't for history, none of us would be sitting around this table now. We'd be safely back at our table in our house in Berlin. We are correcting history here.'