Thanks Quetzal...thats some great stuff.
I had previously thought that warfare was affecting our cultural evolution and had little but perhaps a drift effect on genetic makeup. Obviously warefare has an effect on some genetic markers.
I agree with you that the most profound genetic changes in humans come in response to disease. My background is in microbiology, so perhaps its an innate response, but it seems to me that the history and sheer number of disease interactions outweigh the effects of warfare.
To go back to the original question, I risk repeating myself from a previous thread. I don't think evolution is going backward. To many evolution is "differential reproductive success" in "adaptation to local environments". Any perceived directionality comes from our active minds trying to discern a pattern that may not be there.
What is exciting to me from your information is that our cultural evolution seems to have a genetic effect that is relatable to overall behavior patterns in distinct groups. Great stuff to chew on!