Frederick Edward Hulme, The Flags of the World — Chapter 1 (1896)
“ The modern cavalry guidon is square in form, and richly embroidered, fringed, and tasselled. A mediæval writer on the subject lays down the law that "a guydhome must be two and a half yardes or three yardes longe, and therein shall be no armes putt, but only the man's crest, cognizance, and device, and from that, from his standard or streamer a man may flee; but not from his banner or pennon bearinge his armes." The guidon is largely employed at State or ceremonious funeral processions ”
