Probably is suppose to be Sgt. Charles Ewart of the 2nd. Dragoons, Royal Scots Grays who captured the color of the French 45th. of the Line at Waterloo. The sword looks accurate & well done, hopefully he has the plan black leather sabertache.
Both Ospreys " Wellingtons Heavy Cavalry " and D.S.V. & B.K. Fostens " Thin Red Line" give some accurate pictures of the Grays uniform at Waterloo.....
Great work. I am gratified to see one of the most abused pieces of gear in miniaturedom captured accurately for a change, namely the Grey's unique bearskin. Bravo!