A band society, or horde in generally older usage, is the simplest form of human society. A band generally consists of a small kin group, no larger than an extended family or clan. The general consensus of modern anthropology sees the average number of members of a social band at the simplest level of foraging societies as ranging from 30 to 50 people.
Band was one of a set of three terms employed by early modern ethnography to analyse aspects of hunter-gatherer foraging societies. The three were respectively 'horde,' 'band', and 'tribe'. The term 'horde', formed on the basis of a Turkish/Tatar word úrdú (meaning 'camp'), was inducted from its use in the works of J. F. McLennan by A. W. Howitt and Lorimer Fison in the mid-1880s to describe a geographically or locally defined division within a larger tribal aggregation, the latter being defined in terms of social divisions categorized in terms of descent. Their idea was then developed by A. R. Radcliffe-Brown, as a model for all Australian indigenous societies, the horde being defined as a group of parental families whose married males all belonged to the one patrilineal clan. 'Horde' from the outset bore stereotypical connotations of Australian Aboriginal societies as primitive, closed, rigid and simple, and came to be discarded not only for its implication of 'swarming savages' but also because it suggested a fixed tribal- territorial entity which compromised the actual field data, which allow for a far more fluid concept of the group.
In 1936 Julian Steward reformulated Radcliffe Brown's highly restrictive definition, by proposing the idea of a band society at the hunter-gatherer level which could be patrilineal, matrilineal or a composite of both. Over time, 'band' has tended to replace the earlier word 'horde' as more extensive comparative work on hunter-gatherer societies shows they are not classifiable as simply closed patrilineal groups, and better approached in terms of a notion of a flexible, non-exclusive social band, having bilateral relations for marriage and other purposes with similar groups in a circumscribed territory.
Bands have a loose organization. They can split up (in spring/summer) or group (in winter camps), as the Inuit, depending on the season, or member families can disperse to join other groups. Their power structure is often egalitarian. The best hunters would have their abilities recognized, but such recognition did not lead to the assumption of authority, as pretensions to control others would be met by disobedience. Judgments determined by collective discussion among the elders were formulated in terms of custom, as opposed to the law-governed and coercive agency of a specialized body, as occurred with the rise of the more complex societies that arose upon the establishment of sedentary agriculture.
A. R. Radcliffe-Brown defined the horde as a fundamental unit of Australian social organizations according to the following 5 criteria:
In his 1975 study, The Notion of the Tribe, Morton Fried defined bands as small, mobile, and fluid social formations with weak leadership that do not generate surpluses, pay taxes nor support a standing army.
Bands are distinguished from tribes in that tribes are generally larger, consisting of many families. Tribes have more social institutions, such as a chief, big man, or elders. Tribes are also more permanent than bands; a band can cease to exist if only a small group splits off or dies. Many tribes are subdivided into bands. On occasion hordes or bands with common backgrounds and interests could unite as a tribal aggregate in order to wage war, as with the San, or they might convene for collective religious ceremonies, such as initiation rites or to feast together seasonally on an abundant resource as was common in Australian aboriginal societies. Among the Native Americans of the United States and the First Nations of Canada, some tribes are made up of official bands that live in specific locations, such as the various bands of the Ojibwa tribe.
Band societies historically were found throughout the world, in a variety of climates, but generally, as civilisations arose, were restricted to sparsely populated areas, tropical rainforests, tundras and deserts. With the spread of the modern nation-state around the globe, there are few true band societies left. Some historical examples include the Shoshone of the Great Basin in the United States, the Bushmen of southern Africa, the pygmies (Mbuti) of the Ituri Rainforest in Africa, and some groups of indigenous Australians.