I think the real definition of fascism requires the use of modern media (i.e., radio and to some extent film) to really spread and become the all-powerful presence that we associate with the word. I mean, I'm sure that Napoleon was at least as authoritarian as Lincoln or even Mussolini for that matter, but the infrastructure of his day didn't support what we could rightfully call fascism. In any case, at least for Lincoln, there was public and vocal opposition in the 1864 election IIRC, which to me puts him in a different category from real fascists.