With some customisation you can make a nice french army with the bluecoats.
The standard imperial soldier is a perfect match for the napoleonic line infantry.
When you give him blue pants and yellow epaullets, you get french light infantry.
When you change the shako to a busby, then you get a old guard grenadier.
I took some picts of my french army to demonstrate:
http://www.brickshelf.com/gallery/jeanmark...my/napoleon.jpg
http://www.brickshelf.com/gallery/jeanmark...ne-infantry.jpg
http://www.brickshelf.com/gallery/jeanmark...ht-infantry.jpg
http://www.brickshelf.com/gallery/jeanmark...y/artillery.jpg
http://www.brickshelf.com/gallery/jeanmark...l-army/band.jpg
http://www.brickshelf.com/gallery/jeanmark...uirassiers.jpg
http://www.brickshelf.com/gallery/jeanmark...le-and-flag.jpg
http://www.brickshelf.com/gallery/jeanmark...-grenadiers.jpg
http://www.brickshelf.com/gallery/jeanmark...y/full-army.jpg
This time with deeplinks! Thanks for the advice ;-)