45th Regiment (British Army)

45th Regiment (British Army)
Unit name	45th Regiment (British Army)
Caption	Regimental colour (illustrative)
Dates	18th century–1881
Country	Kingdom of Great Britain; United Kingdom
Allegiance	British Crown
Branch	British Army
Type	Infantry
Role	Line infantry
Garrison	Varied: Ireland, West Indies, Canada, India
Notable commanders	Henry Cornwallis, John Burgoyne, Thomas Picton

45th Regiment (British Army) was a line infantry regiment of the British Army raised in the 18th century that served across Europe, the Americas, Africa and Asia before being amalgamated during the Cardwell and Childers reforms. The regiment took part in major conflicts including the War of the Austrian Succession, the Seven Years' War, the Napoleonic Wars, and numerous colonial campaigns, earning battle honours and distinctions that linked it with stations from Nova Scotia to Madras. Its lineage and traditions were absorbed into later county regiments in the late 19th century.

History

The regiment's history intersects with campaigns led by commanders such as James Wolfe, Arthur Wellesley, 1st Duke of Wellington, Charles Cornwallis, 1st Marquess Cornwallis, and Robert Clive across theatres including North America, West Indies, Iberian Peninsula, and the Indian subcontinent. Stationing patterns reflected imperial priorities of the 18th century, 19th century colonial administration and strategic responses to rivals like France, Spain, and later the Russian Empire. Reforms under Secretaries of State such as Edward Cardwell and legislators connected its fate to county localization and reorganization of the British Army.

Formation and Early Service

Raised during the mid-18th century amid rivalries between Great Britain and France, the regiment initially mustered recruits in English counties and drew officers from gentry families tied to constituencies represented in the House of Commons. Early commissions and promotions involved figures linked to patronage networks around the Court of St James's and officers with previous service in the War of the Austrian Succession. Deployments sent battalions to reinforce garrisons in Ireland and the West Indies, where disease as much as combat shaped operational effectiveness, and where the regiment encountered forces from Spain and privateers from France.

Napoleonic Wars and 19th Century Deployments

During the Napoleonic Wars, detachments and battalions of the regiment served in expeditionary operations ordered by the War Office and directed by commanders coordinating with allied monarchies such as Portugal and the Kingdom of Spain. The regiment took part in amphibious landings, sieges and the extended peninsular campaigns that culminated in engagements alongside divisions commanded by leaders associated with the Peninsular War. Post-1815, the regiment contributed detachments to peacekeeping and occupation duties after the fall of Napoleon Bonaparte at Waterloo and participated in garrison reliefs across North America during tensions with the United States.

Colonial Service and Garrison Duties

Throughout the 19th century the regiment rotated through imperial garrisons in the West Indies, Canada, Gibraltar, and India, providing internal security, civil support during riots, and participation in punitive expeditions against local polities. Deployments included relief of besieged posts, amphibious operations against fortified positions, and involvement in campaigns responding to uprisings and frontier conflicts connected with the expansion of the East India Company and later British Raj governance. Service often required coordination with naval squadrons from the Royal Navy and colonial administrations in Jamaica, Bermuda, Mauritius, and the Cape Colony.

Amalgamation and Post-Cardwell Reforms

Administrative reforms driven by Edward Cardwell and successors restructured the numbering and county affiliations of infantry regiments. Under the Cardwell system and subsequent Childers Reforms, the regiment was linked with a county depot and paired with other line battalions to create multi-battalion county regiments, a process influenced by debates in the British Parliament and policies from the War Office. Amalgamation transferred the regiment's colours, records and traditions into newly constituted units reflecting local recruiting areas and the broader shift toward territorial organization of the British Army.

Battle Honours and Traditions

The regiment accrued battle honours commemorating actions across campaigns such as engagements in the Caribbean islands, skirmishes in North America during colonial wars, peninsular actions, and colonial expeditions in India and Africa. Its honours were emblazoned on regimental colours alongside battle honour lists maintained by the War Office and celebrated on regimental days and mess dinners, occasions attended by officers with service during actions recognized by awards like the Army Gold Medal and mentions in dispatches. Regimental traditions included commemorations of earlier sieges, anniversaries linked to specific battles, and rolls of honour preserving names of those killed in notable actions.

Uniform, Insignia and Regimental Culture

The regiment's uniform followed army regulations evolving from red coats with facings of specific colours determined by order of precedence and depot associations, with accoutrements such as shakos, forage caps and later tunics reflecting changes promulgated in clothing warrants. Insignia included cap badges, regimental buttons, and colours bearing emblems referencing royal patronage and battle honours; musicians wore reversed colours as regulated. Regimental culture drew on shared experiences of long deployments, messroom customs, drill traditions, and connections to local communities in recruiting counties, sustaining veteran networks, associations, and commemorative practices preserved in regimental museums and county archives.

Category:Infantry regiments of the British Army Category:Military units and formations disestablished in 1881 Category:Military units and formations of the United Kingdom