I gotta vote for Harry Turtledove. This is the guy that deals in historical "what ifs?"
He has several series out there. I'd start off with a single called "Guns of the South" Has to do with AK-47's showing up on Robert E. Lee's doorstep.
If that floats yer boat go for "The Great War". The years star at the WW1 era and so far have gotten right into WW2. It's a 10 book series broken into 3 groups. Just finishing up the last one and I'll be having withdrawl symptoms after this.
Also has another long series ( 8 books) called "The Worldwar Saga". World War 2 gets interrupted by an Alien Invasion.
He has several series out there. I'd start off with a single called "Guns of the South" Has to do with AK-47's showing up on Robert E. Lee's doorstep.
If that floats yer boat go for "The Great War". The years star at the WW1 era and so far have gotten right into WW2. It's a 10 book series broken into 3 groups. Just finishing up the last one and I'll be having withdrawl symptoms after this.
Also has another long series ( 8 books) called "The Worldwar Saga". World War 2 gets interrupted by an Alien Invasion.