Troops were sent to Northern Ireland in 1969. They ended up staying there for nearly 40 years in what became the British Army's longest ever deployment.
This infantry regiment was formed in 1684. After almost 250 years of service with the British Army, it was disbanded in 1922 on the establishment of the Irish Free State.
Join historian Huw Bennett as he examines the interactions between the British Army and paramilitary groups in Northern Ireland during the most violent phase of the Troubles.
