I think the main explainations of the ACW interest in France posted here cover the topic.
I will then just add only some personnal one (maybe shared) :
It may be a paradox, as a frog', i currently do prefer playing the Secession War rather that Napoleon's Campaign because that war have more social & political sens for me.
Napoleonic war's are only again old imperialistic wars between powerfull european royal dynasties.
The wars of the French Republic against all the royal dynasties of Europe (1792-1802), that makes more sens to me. But when Napoleon betrayed the Republic and put again its own nobility and dynasties to rule the European countries the Republic did just free from their kings, that make less romantic roleplay and sens to me.
I know that the war aim of the US Northern government and of the most part of the (white) population was defenetly not to free the slaves. What interest me, it is the way the minority of white people who wanted it managed that it becames a political objective for most of the northern people all along the XIX century till the second part of the Secession War. That was a big historical challenge, from the US independance war in 1776 till the end of the Secession War in 1865. Almost a century of political fight, which ended by a military fight.
I do know that there is some major CSA leaders, like Lee, who may have prone to abolish slave once the CSA would be independant (but would they ever have won against the hudge plantation's owners lobbies?). I personnally don't like big powerfull countries and prefere decentralized powers and governments. So i would prefer the principe of States Rights versus Federal Rights. Except that democratic states rights is legitim only if the whole population have the right to vote, so including the slaves (and I'm not sure about the black population support of the secession if the new CSA did not abolish slavery...).
The interest of the French "educated" people for the US American Revolution is born thanks to the concrete philosophical and political exchanges and solidarity between their new "open minded" and "humanist" XVIII's century bourgeoisie. Not because the king Louis XVI decide once again a new war with Britain using the opportunity to have new allies.
As French, i still feel now that the american revolutionnary contributed also politically to the French Revolution and to the creation of the French Republic.
If you ask them, most of the French people would naturally say that the spirit of the American and French revolution include the end of slavery, everywhere, always.
That's why the american "revolutionary" fight, political or military, against slavery is for me one of the main keyword of the French interest on ACW. In many points, this conflict is for some French people the final story of the american revolution of 1776.
It's not a war started for freedom, but it's a war which leaded to (more) freedom and the revolutionary abolitionists did know it with their will of "finishing the job of the founders".
When they learn it, most of the French people are surprised to see that there were still slavery in the USA in ...1861. That's why French people often take the shortcut to see the Blue as the "good" and the Gray as the "bad".
Even if it's not so far, the French Republic decided to free the slaves in 1794. It became effective in Louisiane in 1803 (after the delayed retrocession agreement with Spain).
Napoleon restablished eventually the slavery and finally sold Louisiane in 1804, so slavery came back in Louisiane soon with the USA rules (like Texas, since the republic of the US of Mexico abolished slavery in 1829, almost too decades before Alamo).
The second French Republic decided again to free the slaves in 1848 in its territories. Napoleon III tolerated it once again from 1851 to 1870.
The French "support" to the CSA was not only the Napoleon III geostrategic imperial interests policy, it also fit to the bonaparte familly opinion : they don't care at all about the immorality of slavery, somehow like the northern Democrat Party. If the US Secession War happened when France was still in 2nd Republic, the French "support" would depend more likely on the slavery policy of Washington and Richmond (BTW: let's think about it for VGN events & scenarios).
So one of my interest in ACW is the "Revolutionary war" aspect of this conflict.
But what revolution ? Pemberton1 said for example :
"[...] French that enjoy historic fanatasies about this second American Revolution".
For most of the French ("educated", concerned, Historians, etc.) the term "Second Revolution" can be confusing :
- The reason of secession of General Lee - the States' Rights - (supposing from what we know from him that he personnally would probably include later the slaves as full citizen of this States with Rights) could be seen as a "second american revolution". Because he wanted to change/leave the federal constitution into a confederal constitution, by revolutionary secession war if needed. It's still hard for a French to understand this but he could : you have to know that French Republic had also its division and violent fights between pro-centralized and pro-decentralized constitution during the Revolution (and that is also more or less hidden by our "official" history). But France was already so used to absolute centralized monarchy that our pro-decentralized power supporters where only called ...the "fédéralistes" (we even didn't reach the concept of confederalism...:neener
!
- But the reason of secession of the pro-slavery lobbies ruling most of the southern States governments are, anyway for most of the Frenchies, a typical conservativ, archaical counter-revolution. When we see that most of the French (or French linked) who fought with CSA army had names like "de Polignac", let us smile
. It's not surprising : that's sounds really like the big old military nobility families of "Ancien Regime" in exil which fought against the French Revolution and Republic with european monarchs and later joined the bonapartists.
As far as i know, there is one of the US "father founder" who was a true revolutionary, abolitionist, confederate : Martin Luther (
http://press-pubs.uchicago.edu/founders/documents/a1_9_1s8.html). The forgotten soul of CSA's honorable cause ?
If american congressmen would have listen to that guy in the 1780's, well, USA would have save many troubles...
...and maybe we would have copy/paste the debate and the model here in the 1790's and got also our Reb's fighting the centralized parisian supremacy for a French Confederal Republic
?!