British soldiers were initially welcomed into nationalist communities when they arrived in 1969. (Picture courtesy of MoD)
Soldiers search an outbuilding in a remote part of the Northern Ireland countryside. (Picture courtesy of MoD)
Troops regularly supported police operations from 1969 onwards. (Picture courtesy of MoD)
Troops on the streets became a regular sight in Northern Ireland after 1969. (Picture courtesy of MoD)
On 30 January 1972 British paratroopers opened fire on civil rights demonstrators in Londonderry. The day became known as Bloody Sunday. (Photo by William L. Rukeyser)
Soldiers being attacked by rioters on the Falls Road in Belfast. (Picture courtesy of MoD)
Army bomb experts at work in Belfast during the Troubles. (Picture courtesy of MoD)
Troops look on as Orangemen gather beside Drumcree Church.
Army Lynx helicopters became a regular sight in the skies about south Armagh. (Picture courtesy of MoD)
Army engineers dismantling the Watch Tower at Newtonhamilton, County Armagh.
Soldiers of 2nd Battalion Princess of Wales's Royal Regiment pack for the last time at the Bessbrook Mill military complex, south Armagh.