Re alternate histories:

The first one and still one of the most interesting is APOCRYPHAL NAPOLEON written in 1812, revised in 1832, by Louis Geoffroy, in which Napoleon succeeds in subduing Russia in 1812, invades England in 1814 and goes on to become the enlightened ruler of the world.

There is a recent English translation introduced and annotated by Brian Stableford:

link to book’s page on publisher’s site

Returning to THE CONFEDERACY, this is the first i hear about it, but is it really different (conceptually speaking) from THE MAN IN THE HIGH CASTLE or SS-GB? I like the former very much; the latter not so much.