Bugle cords are used as elaborate ornamental leashes on bugles and trumpets, but they are also used as snazzy ornamentation, called aiguillettes (a type of fourragère), on uniforms worn by certain members of the military. While you could buy one pre-made, you could also make one yourself. But this should not be confused with the infantry blue cord of the U.S. Army, which is another type of fourragère only with more elaborate knotting.