From Operation Mincemeat: How a Dead Man and a Bizarre Plan Fooled the Nazis and Assured an Allied Victory, by Ben Macintyre (Crown, 2010), Kindle pp. 29-31:
At thirty-eight, Ewen [Montagu] was too old for active service, but he had already volunteered for the Royal Naval Volunteer Reserve. With the outbreak of war, he was commissioned as lieutenant (acting lieutenant commander) and swiftly came to the attention of Admiral John Godfrey, the head of Naval Intelligence. “It is quite useless, and in fact dangerous to employ people of medium intelligence,” wrote Godfrey. “Only men with first class brains should be allowed to touch this stuff. If the right sort of people can’t be found, better keep out altogether.” In Montagu he knew he had the right sort of person.
Godfrey’s Naval Intelligence Department was an eclectic and unconventional body. In addition to Ian Fleming, his personal assistant, Godfrey employed “two stockbrokers, a schoolmaster, a journalist, a collector of books on original thought, an Oxford classical don, a barrister’s clerk, an insurance agent, two regular naval officers and several women assistants and typists.” This heterogeneous crew was crammed into Room 39, the Admiralty, which was permanently wreathed in tobacco smoke and frequently echoed with the sounds of Admiral Godfrey shouting and swearing. Fleming awarded Godfrey the heavily ironic nickname “Uncle John,” for seldom has there been a less avuncular boss. “The permanent inhabitants who finally settled in this cave,” he wrote, “were people of very different temperaments, ambitions, social status and home life, all with their particular irritabilities, hopes, fears, anguishes, loves, hates, animosities and blank spots.” Any and every item of intelligence relevant to the war at sea passed through Room 39, and though the atmosphere inside was often tense, Godfrey’s team “worked like ants, and their combined output was prodigious.” The ants under Godfrey were responsible not merely for gathering and disseminating secret intelligence but for running agents and double agents, as well as developing deception and counterespionage operations.
Godfrey had identified Montagu as a natural for this sort for work, and he was swiftly promoted. Soon, he not only represented the Naval Intelligence Department on most of the important intelligence bodies, including the Twenty Committee, but ran his own subsection of the department: the top secret Section 17M (for Montagu). Housed in Room 13, a low-ceilinged cavern twenty feet square, Section 17M was responsible for dealing with all “special intelligence” relating to naval matters, principally the “Ultra” intercepts, the enemy communications deciphered by the cryptanalysts at Bletchley Park following the breaking of the German cipher machine Enigma. In the early days of 17M, the Ultra signals came in dribbles, but gradually the volume of secret information swelled to a torrent, with more than two hundred messages arriving every day, some a few words long but others covering pages. The work of understanding, collating, and disseminating this huge volume of information was like “learning a new language,” according to Montagu, whose task it was to decide which items of intelligence should pass to other intelligence agencies and which merited inclusion in the Special Intelligence Summaries, “the cream of all intelligence,” while coordinating with MI5, Bletchley Park, the intelligence departments of the other services, and the prime minister. Montagu became fluent at reading this traffic, which, even after decoding, could be impossibly opaque. “The Germans have a passion for cross-references and for abbreviations, and they have an even greater passion (only equalled by their ineptitude in practice) for the use of code-names.”
Far Outliers 