I just read into one of the series-couldn't tell you which one-but Turtledove isn't my kind of storyteller. As a boy I was fascinated by an extended magazine article speculating about the outcome of a Union defeat at Gettysburg (if Chamberlin's mob had been turned on Little Round Top instead of counter attacking & routing the Rebels). Needless to say the author saw Congress suing for peace as General Lee destroyed Meade and sacked the capitol. Born in 1950 to a Civil War history buff I was 13 on the centennial of the battle. And over time we visited many of the battlefields.