This is only peripherally related. But since we are on the topic of Napoleon...
Charles Joseph Minard created and published a flow map of "Napoleon's disastrous Russian campaign of 1812"[1]. This graphic is way ahead of it's time. It provides so much information in such a concise and clear form that it's hard to imagine that it was published in 1869.
Also see more information on Tufte's website[2][3]. That is how I originally found out about it.
[1] http://en.wikipedia.org/wiki/Charles_Joseph_Minard and http://upload.wikimedia.org/wikipedia/commons/2/29/Minard.pn...