Written at th height of the Great War, this scholarly work on the War Between the States, albeit over a century old, is still a highly readable one.
Written almost exclusively from the Northern perspective, and without bothering investigate the causes of the war beyond a blanket statement of slavery (possibly the trend setter for academia, as this was an academic work), it is worth a look into the foundational structures of what was the North's mythology on the war: the war as righteous crusade, which is now the national gospel. (The War Between the States is held hostage by two prevailing mythologies, neither of which is truly accurate, though both contain enough cores of truth to make them believable, and that is both the Nationalist Grand Crusade myth of New England, and the Lost Cause myth of the South. Both are wrong, even if both contain elements of truth).
The book gives only a cursory glance at military operations, though for some reason Rhodes spent an inordinate amount of time on both Chancellorsville and Gettysburg (and it should be mentioned that while he was a Northern academic, his narrative is infused with voluminous praise for Robert E. Lee. Once cannot help but get the feeling that Lee was, perhaps in private, a great hero to Rhodes. And why not?), While merely painting in broad strokes the rest of the war.
That said, he does make a few very astute observations and analyses.
His analysis of the great bloodbath in central Tennessee, during the bitter winter of 1862-63, the Battle of Murfreesboro/Stones River, runs counter to the vast majority of analysis out there. He points out, I think rightly, that the Battle was only spun by the North as a great victory as a propaganda tool to both bolster flagging morale at home, and to make wary the British and French who were keen to intervene on the Southern behalf. In truth, and I wholeheartedly agree (heavily considering my own scholarly monograph on the Murfreesboro Campaign), Rhodes points out that Rosecrans merely survived the ferocious Rebel assaults on New Years Eve, and that Bragg, by hammering so badly the Federals on day 1, and still controlling the route to Chattanooga even after retiring to Tullahoma, had performed a strategic positive for the Confederacy. Rosecrans and the secondary Federal Army of the war, would be immobile for six months following the bloody stalemate at Stones River.
He isn't as harsh on McClellan as many modern writers, something I wholeheartedly agree with alongside Rhodes, and points out that McClellan's strategic vision was sound, and Rhodes further points out that McClellan's Generalship has been only slandered by looking at the war through the lens of 1864, when the Federals finally improved their command cadres.
If one takes McClellan at face value, he was actually a very good commander, certainly better than either Pope or Burnside, or arguably even Rosecrans or Buell from the West.
Beyond military matters, Rhodes main focus is on the political. And here is the true worth of the book. While the story of the Lincoln Administration and it's handling of the war is a well trod path, the handling of the International dimensions is what sets this classic work apart. In no other work have I ever read such an in depth retelling and analysis of the European dimensions of the war, even telling, very early on, that Lincoln threatened war with Spain and Brazil for their early trade links with the Confederate States.
You just don't read that in modern works, which tend to exclude the international dimension.
Rhodes spends a great deal of time discussing the financing, and taxing of the war, including a detailed discussion on the creation of the modern US dollar: a Civil War innovation. His in depth look at the draft riots in New England are extraordinary in their coverage, as is his unbiased appraisal of the lack of Northern spirit for the war on the homefront well before Gettysburg, let alone the slaughter that was 1864. While he spends little time on the South, he does point out that Southern nationalism, though he doesn't refer to it as such, was quite real, and that the South had more of their heart in the war than did the North.
His main character, however, is Lincoln. Clearly Rhodes admires Lincoln, and both Lincoln and Lee come through the text almost exclusively with hardly any criticism at all. While Rhodes is fairly blunt in his appraisal of Lincoln's Cabinet, he definitely erred on the side of hagiography when it came to Lincoln.
Despite all of that, I can highly recommend this book. I didn't find the centuries old writing style a burden, I honestly found it refreshingly humane and poignant, something entirely absent from modern academia which seems, all too often, as though written by a machine. And while I can point out plenty I disagree with in terms of analytical interpretations, this is still a worthwhile book to read.
And it's only a dollar on Kindle, you cannot go wrong with that.
Give it a look, it's worth the time.