Spot the deliberate mistake

One of the things I find interesting about going abroad is the way historical events are portrayed from other perspectives. Having got most of my historical education from my dad's copy of the 1932 Empire Book for Boys, it often comes as a bit of a surprise that other peoples might not see the same people and events in the same way.

I've just got back from a few days in la Belle France (The Bell, France) where I discovered that they see the Napoleonic wars in a totally different light to the British. Take, for example, this portrait of Napoleon Bonaparte. It appears that the artist has made several elementary mistakes. Can you spot them?