The focus of this book is the OSS Operational Groups (OGs), colloqially called "Donovan's Devils". The OGs played the role best associated with Green Berets today - they were bands of soldiers with knowledge of guerilla tactics and strong laungauage skills in the language of their target country. They deployed in uniform into enemy occupied territory with the goal of organizing, training, and equipping resistance fighters. They did quite a bit of resistance fighting themselves, also. This book is a small piece of their story, and their story is often tragic.
In October of 1942, Hitler issued the "Commando Order" fuhrer befehl - an order that required any captured commando be immediately handed over to the security services for execution. "Commando" came to mean any soldier operating behind lines in a small group - uniformed or not. Every OG fell into this category, and many were executed. This book recounts the stories of many OGs who were captured and executed in accordance with the order, along with the stories of the German officers who refused (Koch, Rommel) or complied (Dostler, others) with the order. It also dives into the post-war investigation of the order and the executions and the war crimes tribunals that followed.
Overall, I felt like this was a good history of the small slice that it covered - the author obviously did meticulous research and there was no attempt to dramatize things. Unfortunately, the story telling wasn't as impressive as the history. These are amazing stories, but the book was nonetheless dry at times and overladen with minute details. Additionally, the OSS OGs operated in Burma, China, France, Greece, Italy, Norway, and Yugoslavia, yet the book spends almost all of its time in Italy with only a brief forray to France. Worse, within the Mediterranean theatre, the book spends an inordinate amount of time focusing only on the Ginmny I and Ginny II missions, along with the Major Holohan murder. There is so much more to explore in the actions of the OGs - I wish the author had cut some of the dry details and told more of the missions in Norway, China, and France. I don't regret spending the time to read this book, but calling this book a history of the OGs is almost misleading since it focused on such a narrow slice of their activities.