The Royal Welsh (R WELSH) (Welsh Y Cymry Brenhinol) was formed on St David's Day, 1 March 2006. It is one of the new large infantry regiments of the British Army, and the regiment's formation was announced on 16 December 2004.

The Royal Welsh consists of two regular battalions, plus a TA battalion, and was created through the merger of two single battalion regiments. 

·         1st Battalion, The Royal Welsh (Royal Welch Fusiliers) - a light infantry battalion.

·         2nd Battalion, The Royal Welsh (Royal Regiment of Wales)  - an armoured infantry battalion.

·         3rd Battalion, The Royal Welsh (TA) (Royal Welsh Regiment) -TA Battalion which incorporates the Regimental Band.

The Regiment's cap badge is a representation of the Prince of Wales's feathers (formerly the cap badge of the Royal Regiment of Wales), while the hackle of the Royal Welch Fusiliers is worn by all NCOs and Other Ranks. HM The Queen is the new regiment's Colonel-in-Chief.