Knights of Grace and other Members of the Order suspend whatever badge they are entitled to wear below their shield from a black watered-silk ribbon.
[Some members of the Order display their arms upon the Cross of the Order, as was done by Knights of the original Order, from which the present Order is copied, but how far the practice is sanctioned by the Royal Charter, or in what manner it is controlled by the rules of the Order, I am not aware.]
The Lord High Constable of England is entitled to place behind his escutcheon two batons in saltire similar to the one which is delivered to him for use at the Coronation, which is now the only occasion when the office is enjoyed. As the office is only held temporarily, the existing privilege does not amount to much.
The Lord High Constable of Scotland is entitled to place behind his escutcheon, in saltire, two silver batons tipped with gold at either end. The arms of the Earl of Errol (Hereditary Lord High Constable of Scotland) have only once, at an early period, been matriculated in Lyon Register, and then without any official insignia, but there can be no doubt of the right to the crossed batons.
The Lord High Chamberlain of Scotland (I am not sure this office still exists): Two golden keys in saltire behind the escutcheon.
The Earl Marshal and Hereditary Marshal of England places two batons of gold tipped with sable in saltire behind his arms.
[A Deputy Earl Marshal places one similar baton in bend behind his shield.]
The Earl Marischal of Scotland (until the office was extinguished by attainder) placed saltirewise behind his shield two batons gules, semé of thistles, each ensigned on the top with an Imperial Crown or.
The Hereditary Marshal of Ireland (an office for long past in abeyance) used two batons in saltire behind his arms. According to
MS. Harl. 6589, f. 39: "Les armes des office du Mareschall d'Ireland sont de Goulz et cinque fucelles bendes d'Argent." These certainly do not appear to be the personal arms of those who held the office, but there is other record that some such coat was used.