It took me longer to read this than I expected it to. I think it's because Garrison hasn't written a straightforward, chronological history of odd and little-known events in the Civil War, but has divided it up into chapters with different themes. While interesting, I found that I had to read a chapter or two and then stop and think. Many of the tidbits and trivia here are about people and events no one has ever heard of, but, as Garrison says in the conclusion, "...it is hard to escape the conclusion that each event and every person was significant. So viewed, many of the 'curiosities' briefly treated in this volume loom to sudden and perhaps crucial importance." ( page 266).
Judging from the bibliography, Garrison found much of this information in primary sources, such as letters, diaries, and eyewitness accounts. I've read a lot about the Civil War; nevertheless I learned something here. I learned that, though black soldiers were eventually allowed to enlist in both armies, they generally were not allowed to fight, but instead were put to tasks around camp. I found the chapter on silent battles fascinating. People quite close to battles sometimes would be able to see the action in the distance but could not hear anything. Also, battles could sometimes be heard hundreds of miles away, but not seen. I'd love to know what modern physics/weather knowledge has to say about that. The chapter on how various people described Lincoln's physical appearance made me wish I could go back in time and see him for myself. There were chapters on the role of women and the clergy, on horses and regimental mascots, hostage-taking (new to me as a Civil War practice), weapons invented for the war, the significance of the flag in battle, and the sometimes humorous hatreds that existed between officers. Another chapter that intrigued me was the one about how, at the beginning of the war, soldiers on both sides were often ill-equipped for battle, with old, outmoded weapons and uniforms of all varieties of styles and colors. "...many analysts later concluded that had U.S. authorities purchased all available foreign-made [better working] rifles at the outbreak of hostilities, the Civil War would have been shortened by two or perhaps even three years." ( page 139).
Garrison has written a second book of this type which I'd now like to read. Recommended for Civil War buffs.