I opted to use the left over Adler Old Guard Grenadiers to flesh out my Army of Italy for the 1809 campaign. So here they are as the Italian Royal Guard. I will be using some Baccus Grenadiers to do a regiment of Velites to join them.
I am not sure how accurate it is, but I opted to use a sprue of Adler Imperial Guard artillerymen to do a single battery to support my Royal Guard brigade.
The gun is one of Adler's 8lbs, which isn't apparent unless you see it next to the 4 and 12lb cannon. (all of which are probably the same at observers beyond 18 inches)