Here is an interesting piece which was found in a newspaper dated March 1798:
"The Duke of York, on the Kings return from court yesterday, brought with him two Hungarian soldiers, who are to serve in the 60th Regiment of foot, for His Majesty's inspection. They were dressed in the regimentals of the country, which consisted of an olive-green jacket, blue pantaloons, black gaiters striped with red, and wore on their heads hussar caps with a green feather: they were accoutered with rifle-barrel guns, and went through their exercise with astonishing celerity, which their method of ramming down the charge greatly contributes to, they returning the rod into its place after it is thrown up with only one motion, instead of twirling it between the fingers, as practiced by our troops; his Royal Highness has for his Regiment several more of these men who are also to be viewed by His Majesty for his approbation".
1st Coy. 5/60th Rifles
Celer Et Audax