Pentomic

Pentomic (cf. Greek pent(e)- + -tome "of five parts") was a structure for infantry and airborne divisions adopted by the US Army between 1957 and 1963, in response to the potential use of tactical nuclear weapons, on future battlefields. It was intended that the five subordinate units, which were often referred to as battle groups (to distinguish them from traditional units), would be able to deploy and engage in operations more rapidly than conventional brigades while also having greater offensive capabilities than conventional battalions.

One US Army publication defines the pentomic division as "a public relations term designed to combine the concept of five subordinate units ('penta') with the idea of a division that could function on [either] an atomic or nonatomic battlefield".^[1]

Several other countries also temporarily adopted similar structures in their armed forces, at around the same time as the US example, including France (from 1955), Australia, Turkey, and Spain.

^ Johnathan M. House, Toward Combined Arms Warfare: A Survey of 20th-Century Tactics, Doctrine, and Organization, 1984. United States Army Combat Studies Institute. US Army Command and General Staff College. Fort Leavenworth, Kansas. p. 155.

[1] Johnathan M. House, Toward Combined Arms Warfare: A Survey of 20th-Century Tactics, Doctrine, and Organization, 1984. United States Army Combat Studies Institute. US Army Command and General Staff College. Fort Leavenworth, Kansas. p. 155.

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