Proto-Indo-Europeans
Many Indo-European societies know a threefold division of priests, a warrior class, and a class of peasants or husbandmen. If there was a separate class of warriors, it probably consisted of single young men. They would have followed a separate warrior code unacceptable in the society outside their peer-group. Traces of initiation rites in several Indo-European societies suggest that this group identified itself with wolves or dogs (see also Berserker, werewolf).