548 • TOPOGRAPHICAL AND STATISTICAL DEPARTMENT (TSD)
nity to insert the additional material, or that he had actually switched
sides and had to be regarded as an SVR adherent.
The Big Breachwas reprinted in Scotland by Mainstream, giving
wider circulation to the most comprehensive insider’s view of the
modern SIS ever produced. As well as covering much of the ground
published two years earlier by theSunday Times, the book referred
to numerous other operations and individuals, leaving the author vul-
nerable to arrest if he ever ventured back into British jurisdiction.TOPOGRAPHICAL AND STATISTICAL DEPARTMENT (TSD).
In 1855, following an acknowledgment that Lord Raglan’s troops
had been deployed to the Crimea completely unprepared for what to
expect, the War Office appointed MajorThomas Jervisto establish
an intelligence branch as the Topographical and Statistical Depart-
ment. In 1870 CaptainCharles Wilsonof the Royal Engineers was
appointed the TSD’s executive officer. He was assigned a staff of
three to conduct an ordnance survey of the strength, organization,
and equipment of foreign armies. In 1873, following the Franco-
Prussian War, the TSD became a proper intelligence department,
headed by the firstdirector of military intelligence, GeneralHenry
Brackenbury.
TRAFFIC ANALYSIS.One of the essential disciplines of signals in-
telligence, traffic analysis can extract useful information from an in-
tercepted transmission even if the text itself resists cryptographic
attack. The fact that a message of a certain length was broadcast from
a particular station, at a specific time, and was acknowledged by a
known callsign may have an intelligence value.
TREASURE. SeeLILY SERGUEIEV.
TREATY OF WESTMINSTER.A conference was held in London in
1931 to deliberate on the security of the empire. It was attended by
250 provincial chief constables, Sir Horace Williamson (of theIn-
dian Political Intelligence Bureau),Sir Vernon Kell,Sir Eric
Holt-Wilson(representingMI5), Scotland Yard’s assistant commis-
sioner (crime), Norman Kendal, and the head of theSpecial Branch,
Edward Parker. As a result of their deliberations, it was agreed that