The last figure is a converted march-attack figure that I've converted into a flag-bearer officer. I'll try my hand at sculpting to add epaulets and the flag-strap (not sure of the technical military term; I'm sure there is one!). If I'm feeling adventurous enough, I might try giving him longer coat tails and disguising his gaiters as cavalry boots.
Profile view of conversion. Front-on looks a bit narrow.
Front on view of the head from HaT's reloading figure. A lot more anatomically correct!
Flag bearer conversion with HaT head and sword and scabbard from the old Italeri French infantry that are good only for body parts.