battle French Loss % Enemy Loss %
Austerlitz 12% / 19%
Auerstadt 27% / 14%
Eylau 19% / 35%
Friedland 9% / 41%
Borodino 23% / 33%
Salamanca 28% / 10%
Vitoria 10% / 7%
Waterloo ? but higher than the allied looses 22%
(figures are from David Chandler's Guide to the Battlefields of Europe)
And many of the battles was larger.
Borodino had 70-80.000 casualties in a day. compared to about 22.000 for Antietam...
How many large civil war battles had a side loosing more then 30%? I can only think of Gettysburg...
(and maybe Antietam depending on what numbers you use for the CSA)
Waterloo cause similar numbers of dead and wounded in one day... as Gettysburg did in 3.
(and then we got two other battles just two before it that caused another 25k+ casualties)
According to the nps the total number of casualties was just around
1,1 million.
And 2/3 of the deaths was to sickness.
(
https://www.nps.gov/civilwar/facts.htm)
Yes it shocked the americans... but that don't change the fact that it was not more bloody than earlier European wars.