(Image borrowed from the original Elm Jacket post)

The Elm Jacket is a fitted jacket with tails, based on the military jackets common in the 1700s and 1800s but which are most atmospheric of the Napoleonic era. This isn’t a perfect historical copy, so it’s maybe not for the strict re-enactors, but if you are just looking for something that brings the era to mind or which you are going to add a tonne of stuff to, then this will probably do the trick admirably.

Link