... might I recommend reading some of the alternate history book series by Harry Turtledove?
http://www.sfsite.com/~silverag/turtledove.html
What if the South was armed with AK-47 rifles instead of single-shot rifles?
The Guns of the South involves a pair of far-right-wing South African arms traders that travel back in time to 1862, where they offer to arm the Army of Northern Virginia wit weapons nearly 100 years ahead of their time. Needless to say, the Union gets the living sh*t kicked out of them with the South's new technological advancement.
Now for a continuing series, read both
The Great War and
American Empire series of books. Lots of good what-if possibilities.
You need to start off with the 'prequel'
How Few Remain which documents a victorious South going for a second Civil War against the Union.
The
Great War series details a radically different World War One and a third Civil War. The three books in the series:
American Front
Walk In Hell
Breakthroughs
You'll notice a curiously familiar character that will take center stage in the next series of books. Confederate artillery sergeant Jake Featherston is essentially a Hitler in another setting. This time, the South does lose the Great War, and begins to suffer the postwar economic and military punishment that Germany got in real life at the end of WWI.
The
American Empire series deals with life in the USA and the CSA in the period after the war. We see the rise of Jake Featherstone and his Freedom Party (shades of the Nazis in real life) and the crippling devaluation of the CSA economic system due to punitive reparations by the victors. The three books (so far in this series:
Blood and Iron
The Center Cannot Hold
The Victorious Opposition - just published
Ordinarily, I'm not a big fan of science fiction, but I do enjoy reading about alternate history.