It Wasn't a Civil War.
That title gives just a hint that the reading is about the division of a relatively new nation. As a nation we have become divided partly because of human rights issues, states rights issues and of course the long practice of a class system. Throw in a little politics and the political machine promising to change things for the betterment of the citizens … very often without consent of the citizens.
The book is somewhat chronological in that we start with the Fall of Fort Sumpter in 1861 and go forward from there. The stories are in blocks of 1861, 1862, 1863, 1864 and 1865.
As would be expected, there are stories of Heroes, True leaders of men, Deserters, Military Strategist (whom we dearly counted on), and weeping widows with orphaned children.
There are plenty of lessons to be learned about mankind and the years of the American Civil War. Thinks happened we do not want to go through again.