Norse, that's true, but they were a militarized society and you find war depictions in art and epics which one doesn't find in harappa's case
And the Anasazi did not.
Neither did the pre-Roman Britons, Gauls, Germans or Rus.
Their warriors lived in their own houses with their own families. Actually quite a more healthy system then isolating the warriors from their families.
It is a trend we have started to embrace. Except for basic most troops today have never lived in a barracks.
It also increased the likelihood that your warriors tended to have children which did not dilute your gene pool nearly as badly.