Secret Pigeon Service: Operation Columba, Resistance and the Struggle to Liberate Europe | 
so-soWhile this book is worth reading, the middle drags on about one particular group who used the pigeons and then ended up in the hands of the Germans. I preferred the beginning and end which highlighted more specific actions of the pigeons and how they impacted the War. Worth reading overall for information/topic but not what I was hoping for when I picked this up. The language, flow and writing were excellent though.