Battle Cry of Freedom

Excellent and very readable account of the Civil War. It starts at the end of the Mexican-American War, and covers the rising tensions tensions in the 1850s--including 'Bloody Kansas', the Dred Scott decision, and the splintering of American politics into a primarily sectional dispute. The war itself is primarily an account of the campaigns, interspersed with chapters on the economy, political disputes, emancipation and other domestic concerns.
Presumably because it's part of the Oxford History series, it ends rather abruptly with the end of the war in 1865, leaving the narrative thread that was leading towards complete emancipation (not to mention the black vote) incomplete, though sparing the reader the depressing story of the abandonment and reversal of those arcs during reconstruction.
Various points:

• I hadn't realized how much the later war in the Virginia theatre started looking like WWI. Weapons had improved and soldiers had dug in, so assaults became brutal.
• This might have happened even earlier, but Union leaders in the east before Grant tended to retreat after a failure and Lee would pursue them. Grant simply held the line and attacked again.
• Along these lines, McPherson argues that suggesting Grant's goal was a war of attrition (where the Union was guaranteed to win) is wrong. Grant’s maneuvering and assaults were intended to push Lee out so he could be decisively beaten. Which failed until Sherman’s southern advance made Lee desperate, when it succeeded.
• Lee, Jackson, Sherman and Grant come off well as military leaders. McClellan as an excellent administrator with no nerve for combat and Hooker and Burnside as incompetents.
• Lincoln’s thoughts on slavery changed over his lifetime but very rapidly during the war. Even more dramatic were his thoughts on blacks where he went from an explicit (if fairly indifferent) racism towards being in favor of black voters and defending black troops and POW’s. (See also The Fiery Trial, which I should review sometime, for much more on this.)
• There were many morbid ironies in the war, among them that the South’s perseverance and early success guaranteed the end of slavery. If McClellan had won in 1862 slavery would have lasted in some form for a generation or two at least.
• The British elite were basically willing to recognize the South but wanted to wait until it was quite certain the North would admit they were stalemated, which they generally expected to happen ‘soon.’ Napoleon III wanted to recognize the South but didn’t want to go it alone.

The song is jauntier than the book, which was often a brutally depressing read.