It is hard to explain, feelig of dred and exiliration at the same time. Choices that fees real. Decent replayability. The only chick in the armor is that after few playthroughs, you do start seeing it is a game, i.e. game mechanics in it. But it is solid 9.5 from me.
I was looking for something like Total War, but for the Napoleonic or Civil War era, and here I have found it. The game does not have "grand strategy" layer, rather it is only a sequence of battles. However, the battles are great, and your army suffers or grows with your triumphs and mistakes. Highly recommended.