No "eme". Just the standard "e"
It goes both ways .. but there's an accent grave in ' eme ' so it would be 33ème, spelled out it's trent troisième.
Good Luck !
Originally the French line regiment numbered "33" used the "è". Plus, you don't see many french Napoleonic regiments over the number "9" used "ème". Even the in game double digit numbered regiments use "è".
You do understand that its eme because french numbers if written would go like that...
Premiere - ending ere
Deuxieme - eme
Troisieme - eme
Quatrieme - eme
Cinqieme - eme
Sixieme - eme
Septieme - eme
Huitieme - eme
Neufieme - eme
Dixieme - eme
So it wouldn't be like lets say 4 regiment of foot : 4e regiment d'infantrie de ligne , it would be written as 4
th Regiment of Foot: 4eme Regiment D'infantrie de ligne..
In the end it would be spelt trente-troisieme Regiment De Grenadiers or 33eme Regiment De Grenadiers. I am Canadian so I know french just a heads up
Other than that once again Rival all the best to you