A map of 1814 theater that can be useful for you
http://bvpb.mcu.es/es/catalogo_imagenes/download.cmd?posicion=1&path=32439
There is a wikipedia article on the french army of 1814, unfortunately only infantry and cannot see bibliography, but also may be useful
http://fr.wikipedia.org/wiki/Arm%C3%A9e_fran%C3%A7aise_en_1814