Wilson 2013, p. 204. Wilson, Ben (2013), Empire of the Deep: The Rise and Fall of the British Navy (illustrated ed.), UK: Hachette, p. 204, ISBN9780297864097
Royal Scots Greys 1840, pp. 56–57. Royal Scots Greys (1840), Historical record of the Royal regiment of Scots dragoons: now the Second, or Royal North British dragoons, commonly called the Scots greys, to 1839, p. 56-57
This first battle in which uniformed regiments from the British Isles on the European mainland wore this colour (Chisholm 1911, p. 248). Chisholm, Hugh, ed. (1911), "Fronde, The" , Encyclopædia Britannica, vol. 11 (11th ed.), Cambridge University Press, p. 248