By the mid-19th century, entire regiments of riflemen were formed and became the mainstay of all standard infantry, and rifleman became a generic term for any common infantryman.
This converted the musket into a pike for those situations where it might still be useful, such as following up volleys with a charge, crowd control, or defensive formations.
Smooth-bore weapons, such as the musket, had always been recognized as relatively inaccurate, especially at longer ranges, and required massed volleys to be combat-effective.
This meant that the soldiers chosen for this role needed to be good shots, resilient, brave, and resourceful.
Such rifle units reached their heyday in the period shortly before and during the Napoleonic Wars, with the British riflemen partially derived from units of colonial militia (see Rogers' Rangers or the Royal Americans) — truly excelling in the American War of Independence.
The high level of training and specialized roles gave way to generality: the rifles were much faster and simpler to load, able to be reloaded while prone, and impossible to be double-loaded after a misfire.
The term 'rifleman', once used solely as a mark of distinction and pride, became a commonplace description of all infantry, no matter what their actual status was.
It is an assignment rather than a rank, and refers to a marksman or sharpshooter (not a sniper, who is additionally an expert in fieldcraft) who is meant to expand the team's effective range with a long, scoped rifle.
From their inception British Rifle Regiments were distinguished by a dark green dress with blackened buttons, black leather equipment, and sombre facing colours designed for concealment.
Their most famous weapon was the Baker rifle (officially known as the Pattern 1800 Infantry Rifle), which in the hands of the elite 95th regiment and the light companies of the 60th regiment and the Kings German Legion gained fame in the Peninsular War against Napoleonic France.
During the Siege of Delhi the 8th (Sirmoor) Local Battalion along with the 60th Rifles defended Hindu Rao's House during which a strong bond developed.
In the 1850s, the Militia was re-organised into a voluntarily-recruited force that, like the army, enlisted recruits for fixed terms of service.
Concerns over the vulnerability of Britain to attack by a continental power, especially with much of the Regular Army garrisoning the Empire, also led to the creation of a permanent Volunteer Force.
Although this would include various types of units, the majority were company-sized Volunteer Rifle Corps, dressed in rifle-green or grey uniforms and trained as skirmishers to support the line infantry of the regular army or to act independently to harry enemy forces.
Twenty-six former volunteer rifle corps in London on the formation of the Territorial Force (merging Militia, Yeomanry and Volunteer Force) in 1908 became battalions of the new London Regiment, with each retaining its own distinctive rifle green or grey uniform.