<Table> <Tr> <Td> </Td> <Td> This section does not cite any sources . Please help improve this section by adding citations to reliable sources . Unsourced material may be challenged and removed . (December 2015) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This section does not cite any sources . Please help improve this section by adding citations to reliable sources . Unsourced material may be challenged and removed . (December 2015) (Learn how and when to remove this template message) </Td> </Tr> <P> Historically, the United States Army was organized into regiments, except from 1792 to 1796 during the existence of the Legion of the United States . During this period the Army, or "Legion", was organized into four "sub-legions", 18th century forerunners of the modern combined arms brigade . When combined with other regiments during wartime, for active field operations, regiments were further formed into brigades and divisions . </P> <P> From colonial times, the regiment consisted of a small regimental headquarters (regimental headquarters companies not existing before 1915) and in 1775 ten "line" companies, based on the British Army model, without any permanent intermediate level of organization, viz., battalion headquarters organic to the regiment . From 1776 through 1783 American infantry regiments contained from as few as seven companies (e.g. South Carolina Rifles) to as many as twelve (Pennsylvania Rifles and Maryland State troops) with Continental Army infantry regiments having eight companies (increased to nine in 1781). (Briefly, from 1790 to 1792, regiments were organized into three battalions of four companies each .) Traditionally, the regiment and battalion were one and the same, with the "battalion" simply being the regiment organized for battle . </P>

Who commands a regiment in the british army