I didn't like it.
It is much more Napoléon and Joséphine than Napoléon (which is fine too). The battles are really badly made (the real plans and moves are totally ignored) and if you don't know Napoléon's story, there are so many shortcuts that you won't understand it.
I like what Riddley Scott did with Gladiator, Robin Hood, Kingdom of Heaven but here, no.