A warrior is a person specializing in combat or warfare, especially within the context of a tribal or clan-based warrior culture society that recognizes a separate warrior class or caste.
In tribal societies engaging in endemic warfare, warriors often form a caste or class of their own. In feudalism, the vassals essentially form a military or warrior class, even if in actual warfare, peasants may be called to fight as well. In some societies, warfare may be so central that the entire people (or, more often, large parts of the male population) may be considered warriors, for example in the Iron Age Germanic tribes and Indian clans like the Rajputs.
While the warrior class in tribal societies is typically all-male, there are some exceptions on record where women (typically unmarried, young women) formed part of the warrior class, particularly in pre-modern Japan.
A purported group of fighting women is the legendary Amazons, recorded in Classical Greek mythology. Similarly, the Valkyrie are depicted in Norse mythology, particularly the Icelandic Etta.
During the Viking Age a type of female warrior was the skjaldmær, or shieldmaiden. These women survive in a few historical testimonies like those of the Byzantine Empire.
Many women not only fought on the field but led entire hosts of men within Pictish, Briton, and Irish Tribes in Pre Christian culture.Boudicca of the Iceni is a famous example of a female leader of warriors, who rebelled against Roman rule in Britain. Tomoe Gozen is celebrated in Japanese history as a woman samurai General in the 12th Century. Joan of Arc, nicknamed "The Maid of Orléans" is considered a heroine of France for her role during the Lancastrian phase of the Hundred Years' War.