Invisible Armies

Author, historian, and (sadly) political commentator Max Boot takes the reader through thousands of years in Invisible Armies, his chronicle of irregular and asymmetric war throughout history. Let’s just say that I’m no fan of either his past or current viewpoints on contemporary politics and leave it at that. Not just because I don’t want to get political here, but because it’s basically irrelevant to the actual book. (Which is a huge point in its favor, I might add.)
Said book is a masterwork of popular history. It has the weaknesses of its format in that by design it can’t go into too much detail, and no doubt there are some inaccuracies that I couldn’t tell but which someone more invested in the subject matter could. But it also has the strengths of it in that the facts are presented in an extremely engaging way.
There’s one central point made throughout the book, which is that contrary to both recent high-profile examples with small sample sizes and “fourth-generation war” thunderers, the default outcome for an insurgency is loss. Most of the time, it either fails completely or can’t progress past its initial strongholds. There’s also the less novel reminder of almost all successful ones having the support of an outside state.
As something that both explains and demystifies unconventional war, I highly recommend this book.