Wouldn't Napoleon's military advices be badly outdated?
I that a lot of the military academies took the battles from two decades of war in Europe and gave them a special place in their ciriculum. I believe that the American Civil War was considered the first modern war, but that it started out with Napoleonic tactics. Not from him specifically, but just in general since rifles and artillery had been on the rise when Nappy was, and his name was attached to the era and all within it.
I will assume that Napoleon will have good health here? None of that mercury poisoning from the wall paper, the stomach problems he had in some battles, the gout he might get, etc? Almost a shame he went and made himself an emperor in this timeline. If he kept with things as a Republic he might have done well doing a tour of Latin America. Although there would be the butterflies of the Bourbon Spanish monarchy being delegitimized by kowtowing to then be replaced by the Bonapartes.