I enjoyed the story of the Brannon family, with the exception of Titus' story line which was hard. However, the historical context of the series had a strong undertone of lost cause mythology.
I stumbled across this series when I learned my second great-grandfather was wounded fighting for the Union at Chickamauga. I enjoy learning history through stories (ala James Mitchener) so I checked out Reasoner's book about that battle, not realizing it was book seven in a 10-book series. Having been hooked by the story of the greater Brannon family, of course I had to read the entire series.
The story element of the series is top notch. The battle details are hard but necessary. And we also get to know Confederate leadership better. However, the causes of the war Reasoner suggests are pure Lost Cause mythology, as are portrayals of General U.S. Grant and all Yankees. The few Northern sympathizers are portrayed as evil, naive or misguided.
But the greatest Lost Cause error is the treatment of prisoners. Yes, Camp Douglas was bad and prisoner treatment was shameful. By all measures, Andersonville was worse. The death rates of both camps prove that. Overall POW death rates for Union POW's was 15.5% vs. 12% for Confederates. No doubt the gap would be wider if: 1) Union soldiers were in as poor condition as Confederates when taken; and 2) surrendering African-American Union soldiers murdered by Confederates were counted among the dead POW's.
While ignoring such evils, Reasoner is willing at least to portray some Southerners as flawed (though there's no hint that Nathan Bedford Forrest was once a slave trader and would go on to lead the Klu Klux Klan).
That said, I wish I could read more about the post-war greater Brannon family.