Pitched battles weren't a Stone Age occurence, true. That is more of a state and proto-state phenomenon. Tribal wars usually had form of raiding. There is ampl

Pitched battles weren't a Stone Age occurence, true. That is more of a state and proto-state phenomenon. Tribal wars usually had form of raiding. There is ample evidence for homicide among hunters and gatherers, though. We don't like to hear it, because the Noble Savage myth is still going strong. https://evolutionistx.wordpress.com/2015/06/08/no-hunter-gatherers-were-not-peaceful-paragons-of-gender-equality/ https://evolutionistx.wordpress.com/2015/06/08/no-hunter-gat... Yeah, we don't have a comprehensive record of every tribe ever. But violence is attested pretty well among those that we have.