The best books about British intelligence in WW1

This is a short punchy book that provides a great introduction to the topic of codebreaking in England during the Great War, giving a sweeping overview and then some entertaining and tantalizing stories about the people involved. At just over a hundred pages, this is a quick read that serves as a fun introduction to the topic.

Any research into the codebreaking arm of British Intelligence during the Great War will quickly point to one man as the mastermind: Admiral Sir Reginald “Blinker” Hall. He is, at a glance, one of the most intriguing historical figures you’ll ever come across…and the more you learn, the more convinced you’ll be of that. In Blinker Hall, Spymaster, Ramsay delivers not only a thorough look into intelligence and codebreaking, using documents that have been declassified only recently to his writing, but also an insightful look into the man who orchestrated one of the most complex intelligence systems of the modern era. For anyone interested in intelligence, cryptography, or even just the invisible world behind a war that spanned continents, this book delivers it all, and does it in an engaging, entertaining style.

British Intelligence during the First World War is most known for the work of Room 40, which led to the more famous Bletchley Park in the next World War; however, another crucial part of the operation was all the agents in the field that reported to the same man who spearheaded the codebreaking. Those in the Mediterranean were under the command of Charles “the Bold” Thoroton, and this book, written by his granddaughter’s husband, is an enthralling peek into the life of an agent on the ground. From fascinating stories of how unnamed agents found the information the Admiralty was desperate for to being targeted by counter-agent femme fatales, Finding Thoroton reveals information not to be found in any other book, compiled through careful research. A fascinating read.