The regiment that the 6th Battalion, Ulster Defence Regiment grouped into had who as their oldest predecessor?
Royal Irish Regiment (1992) The Royal Irish Regiment (27th (Inniskilling) 83rd and 87th and Ulster Defence Regiment) (R IRISH) is an infantry regiment of the British Army. The regiment was founded in 1992 through the amalgamation of the Royal Irish Rangers and the Ulster Defence Regiment. Their oldest predecessor; the 27th Regiment of Foot; was first raised in June 1689 to fight in the Williamite War in Ireland. Other notable regiments in their lineage include the Royal Inniskilling Fusiliers, Royal Irish Rifles and the Royal Irish Fusiliers (Princess Victoria's).
Scots Guards The Scots Guards (SG), part of the Guards Division, is one of the Foot Guards regiments of the British Army. Their origins lie in the personal bodyguard of King Charles I of England and Scotland. Its lineage can be traced back to 1642, although it was only placed on the English Establishment (thus becoming part of what is now the British Army) in 1686.