'British Humour' scene question

I have only a slight familiarity with this movie, from occasions when it was shown on the A&E cable channel years ago. There was one scene I loved, with a German officer and underling. I don't know even if the officer was the "main" German character or not. In the scene, the officer recites some examples of "British Humour" to his underling: P.G. Wodehouse, "...down in the forest, something stirred"; an 'officer and a gentleman' joke, "well, bring them both up"; and the first two lines of "Jabberwocky", which he reads, "...did gyre and gimble in the 'vahba'"; after which he declares that the whole notion of "British Humour" is just a myth, totally made up. His underling replies, "Yes sir" or to that effect. So I was wondering, just who ARE the characters in this scene?

Once he gets an idea into his head, there's no shifting it.