All cultures have warriors, but what constitutes a warrior varies across cultures and over time. Essentially, the term warrior describes a person—male or female—who is experienced in battle and who specializes in war. It is believed that the earliest conflicts in human history occurred shortly after humans learned how to hunt in groups. Shortly thereafter, humans must have learned that it was more effective to wage against another group (family, band, clan, tribe) with a large assembly of humans. Within this context and over time, societies formed subcultures in which particular individuals were recognized as warriors. In societies embroiled in warfare, warriors formed their own military caste, class, or society, with a particular warrior culture. Examples of warriors in ancient and medieval history include Greek ...