The Royal Warwickshire Regiment, previously titled the 6th Regiment of Foot, was a line infantry regiment of the British Army in continuous existence for 283 years. The regiment saw service in many conflicts and wars, including the Second Boer War and both the First and Second World Wars. On 1 May 1963, the regiment was re-titled, for the final time, as the Royal Warwickshire Fusiliers and became part of the Fusilier Brigade.

The Royal Northumberland Fusiliers was an infantry regiment of the British Army. Raised in 1674 as one of three 'English' units in the Dutch Anglo-Scots Brigade, it accompanied William III to England in the November 1688 Glorious Revolution and became part of the English establishment in 1689.