And I'm supposed to find this somehow enthralling, because it's telling me nothing I haven't heard before? That humanity is capable of good and bad things? War is a horrible thing that people don't think about enough? Soldiers are intentionally molded to prepare to do horrible things on duty while being considered heroes at home? WOW, I never thought of it that way!
I already tried to give you a clue to a central theme of the film by linking to the clip where he quips about it being " a Jungian thing."
The complex, goodbad ambiguity of life as a soldier and a man, or the american public's attitude to war, or the two halves of the film itself, are all jungian dualities that Kubrick challenges us to take a view on.