A possibly now defunct unit of the Ankh-Morpork Army which was drawn, in its entirity, from the writers, painters, artists, sculptors and other creatives of the city. A former member is the sculptor Rhodan who appears in the computer game Discworld Noir.
a still -existing regiment of Britain's Territorial Army (part-time Army reservists) is the Artists' Rifles, a London-based unit which formerly drew its strength from the arty quarter around Bayswater, a district of the city that encompassed the British Museum, British library, and several major art galleries. The AR have seerved with distinction in both world wars. The other 'pedia has some info:http://en.wikipedia.org/wiki/Artists_Rifles