'Soldiers are dreamers'

And not to bore with you passages from other books, but I also found this passage at the beginning of O'Brien's war memoir very moving.

Now, war ended, all I am left with are simple, unprofound scraps of truth. Men die. Fear hurts and humiliates. It is hard to be brave. It is hard to know what bravery is. Dead human beings are heavy and awkward to carry, things smell different in Vietnam, soldiers are dreamers, drill sergeants are boors, some men thought the war was proper and others didn't and most didn't care. Is that the stuff for a morality lesson, even for a theme?

Do dreams offer lessons? Do nightmares have themes, do we awaken and analyze them and live our lives and advise others as a result? Can the foot soldier teach anything important about war, merely for having been there? I think not. He can tell war stories.

The first paragraph as a summary of the war experience is just amazing ("most didn't care"). But the question in the second, "Do dreams offer lessons?", seems to foreshadow the format of "Cacciato," how it's one big daydream in a way. So, do you have any thoughts on how Paul Berlin's dream offers a lesson?