This graph was created in 1869. The brown line shows the march to Moscow while the black line shows the return. Note the freezing temperatures during the return reaching a low of -38 °C (-34 °F). Only 93,000 survived out of the initial 685,000. More about the Grand Armée here.

This is peak /r/dataisbeautiful what a gorgeous graph. So much information from disparate categories but you can easily see how they relate to each other.

Imagine If he would have fully committed his Grande Armee in the battle of Borodino to completely cutoff and destroy the retreating Russians, there's a good chance most of Europe would be speaking French right now.

OG beautiful data. This graph started it all.

Did the missing soldiers die, or leave otherwise?

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First saw that illustration in Edward Tufte’s groundbreaking book on visualizing data.