From their website:
Our publishing partners at Nexus Games have informed us of a small number of errors in some unit cards for Battles of Napoleon, which become relevant when certain optional rules are used.
We have made replacement card images (pdf, 3.5 MB) available for download on our Battles of Napoleon support page. To acquire replacement cards, please contact our customer support via email at email@example.com. We apologize for any inconvenience.