Artists' Rifles

The Artists Rifles is a volunteer regiment of the British Army. Raised in London in 1859 as a volunteer light infantry unit, the regiment saw active service during the Boer Wars and World War I, earning a number of battle honours; however, it did not serve outside of Britain during World War II, as it was used as an officer training unit at that time and disbanded in 1945. In 1947 it was re-established to resurrect the Special Air Service Regiment. Today, the full title of the Regiment is 21 Special Air Service Regiment (Artists) (Reserve).

The Wikipedia page is and the Artist Rifles Association website is.