Okay... can Napoleonic folks help out here?

Hey all!

Okay, the figures are ordered... I was hoping that folks could help out.  I know some about my Napoleonics, but I certainly don't know enough about the officers and the fancy outfit guys!:)

So... what am I looking at in these packs?

The one below... what are those different officers?  Particular regiments or ranks?  What are their responsibilities?

And what about this pack?  Who are all of these folks?  Who is that guy with the hat in his hand, and what on earth is he doing?  And most importantly; does anyone have any advice as far as uniform painting for these guys?

Anyway, I'd really appreciate any help from those who know Napoleonics FAR better than I!:)  Thanks!