Policing was the responsibility of the
parish constable and his urban counterpart, the
watchman, under the auspices of the
magistrates. As urban centres grew, increased crime was dealt with by temporary measures such as the
Special Constabulary. None of these were sufficient to deal with large-scale riots. Although the regular army was disciplined and trusted enough to be used, it was too small and too widely dispersed to be an effective response, and the militia, while available as a local force, was not trusted. It fell, therefore, to the yeomanry to deal with civil unrest, and its numbers were soon increased as a result.
Post-Napoleonic Wars Agitation for constitutional reform by the
Radical movement following the defeat of Napoleon resulted in frequent use of the yeomanry. Most famously, up to 17 people were killed and 650 wounded in the
Peterloo Massacre of 1819, when the
Manchester and Salford Yeomanry charged into a 60,000-strong crowd attending a rally in Manchester. On 2 April 1820, the Stirlingshire Yeomanry was called out during the
Radical War – a week of strikes and unrest in Scotland – and three days later its Kilsyth Troop assisted the regular army's
10th Hussars in the arrest of 18 Radicals at the 'Battle of Bonnymuir'. In south Wales during the violent
collier strikes of 1822, the Monmouth Troop, assisting the
Scots Greys, used the flat of its swords to disperse a mob that was damaging coal trains, and the colliers pelted the Chepstow Troop with stones as it escorted coal wagons a few days afterwards. Elsewhere, the
Staffordshire Yeomanry resorted to musketry, mortally wounding one person, when it was deployed to protect working colliers from their striking colleagues. In total, the yeomen of 12 different corps were called out to support the civil authorities on 19 separate occasions in 1822, and four years later, 13 different corps attended to 16 incidents.
Swing riots and political protests The demand for assistance was not uniform throughout the country, and even at its peak in 1820, less than 30 per cent of counties had called out their yeomanry. Civil unrest declined in the 1820s, and in 1827 local magistrates called upon the yeomanry only six times, a 90 per cent decrease compared to 1820. Faced with funding a force that it perceived to be increasingly unnecessary, the government reduced the yeomanry establishment on economic grounds. Of the 62 corps or regiments that then existed, those 24 that had not been called out in aid of the civil power in the preceding ten years, primarily from the southern counties of England, were disbanded. The remaining 38 corps were retained, though 16 of them were allowed to continue only at their own expense. It was, however, in the southern counties that the
Swing riots erupted in 1830, a largely agrarian protest which resulted in the destruction of machinery in both town and country. As a result, many disbanded corps were resurrected and new ones raised, although it was a slow process and those corps of yeomanry that had survived the cuts were in much demand. The Wiltshire Yeomanry, for example, served in neighbouring counties as well as its own, earning it the prefix "Royal" in recognition of its many services. This regiment was responsible for the one fatality inflicted by the yeomanry during the riots, when its Hindon Troop fought a 500-strong mob of agricultural workers in the 'Battle of Pythouse' at
Tisbury, Wiltshire, on 25 November 1830. There was further civil unrest the year after the Swing riots, prompted by agitation for political reform following the defeat of the
Second Reform Bill in the
House of Lords. In Wales, the
Glamorgan Yeomanry twice suffered humiliation – and in consequence, disbandment soon after – when miners and steelworkers occupied
Merthyr Tydfil; one group of yeomen was ambushed and disarmed as they tried to make their way into town, and on a separate occasion another group was routed. Equally ineffective, though this time through no fault of its own, was a troop of the newly re-raised
Gloucestershire Yeomanry. It was sent to
Bristol when
rioting broke out there in the autumn, but was ordered to leave shortly after arriving by the commander of the regular forces deployed in the city. A second troop of Gloucestershire yeomanry was subsequently joined by yeomen from
Somerset and
Wiltshire to help restore order in the aftermath of the rioting.
Chartist disturbances Although further urban unrest in the 1830s resulted in the deployment of the yeomanry in
Montgomeryshire,
Kent and Birmingham, the government legislated another round of cuts on cost grounds in 1838, reducing the 18,300-strong force by up to 4,700, though nine corps were allowed to continue without pay. As in 1827, the timing was unfortunate, and the rise of
Chartism between 1837 and 1842 resulted in more demands on the yeomanry, to the extent that the commanders of the northern and Midlands military districts were given the ability to summon it directly rather than apply for permission to the Home Office. The greatest pressure came in 1842 – a year which saw six of the nine unpaid corps returned to the establishment and just under 1,000 new yeomen recruited – when civil unrest in 15 English, Welsh and Scottish counties required the deployment of 84 troops from 18 corps, which between them accumulated a total of 338 days' duty. Despite being heavily committed, force was applied sparingly, and the yeomanry was deployed wherever possible as a reserve in support of other law enforcement agencies rather than as a primary agent itself. In 1838, a troop of the Yorkshire Yeomanry was held back during a serious disturbance on the North Midland Railway out of fear that their presence would inflame the situation. The following year, Sir
Charles Napier, commander of the
northern military district, responded to a magistrate request for yeomanry by saying "if the Chartists want a fight, they can be indulged without Yeomen, who are over-zealous for cutting and slashing". There were occasions when force was used, such as the violent confrontations in the
Staffordshire Potteries and North Wales in 1839 between protesters and the yeomen of
Staffordshire,
Shropshire and Montgomeryshire; there were injuries on both sides and at least four deaths among the protesters.
Declining use as a constabulary Between 1818 and 1855, the peak years of its employment in support of the civil power, units of yeomanry were on duty somewhere for approximately 26 days per year on average. It remained available as a constabulary throughout the 19th century, if for no other reason than it was often the only option available to the magistrates, even though it was recognised that its presence might escalate tensions. Its use in this role, however, declined, and the last known deployment in support of the civil power was in 1885. The diminishing demand was fuelled by a decrease in large-scale protest and better law-enforcement options. The development of a national rail network from the mid-19th century enabled rapid deployment of regular forces, and the
establishment of police forces in all counties by 1856 gave magistrates a better alternative than the yeomanry. In 1892, the
Brownlow Committee, set up to investigate the financial and military position of the yeomanry, recommended that its constitution should be specially adapted for home defence, and in 1907 the yeomanry was formally relieved of any role in aid of the civil power. A
select committee report in 1908,
Employment of Military in Cases of Disturbances, encouraged a civil response to civil disorder. It recognised, however, the value of mounted forces, and recommended that police chiefs should maintain the ability to temporarily recruit men with yeomanry experience, casting yeomen thus enlisted as ordinary citizens subject to common law. The evolution of law enforcement can be seen in the government responses to the
Tonypandy riots and the
Liverpool general transport strike of 1910 and 1911, in which the yeomanry played no part when the regular army was deployed to restore order, supported in the former case by 500
Metropolitan Police. ==Role in national defence==