Dominique Larrey, the chief surgeon of the guard, has left extensive memoirs that are of great historical and medical value. Most of them have now been digitized and can be found online.
However, I have had no success with this work:
"Relations medicale de campagnes et voyages de 1815 à 1840, tome 5," Observations chirurgicales d'officiers géneraux et d'officiers blessés sur les champs de bataille "
Does anyone know if there is an online version of this rare volume 5?
I searched gallica but found only volumes 1-4.