Read The Defence of the Realm Online
Authors: Christopher Andrew
82
 George Vaux Bacon; see below,
pp. 73
â
5
.
83
 Felstead,
German Spies at Bay
,
p. 109
.
84
 Boghardt,
Spies of the Kaiser
,
p. 106
.
85
 Felstead,
German Spies at Bay
,
pp. 110
,
139
,
150
,
209
â
15
,
284
. âHurwitz y Zender, Ludovico', âGame Book', vol. 2: 1916â1937, TNA KV 4/113.
86
 Security Service Archives.
87
 âBacon, George Vaux', âGame Book', vol. 2: 1916â1937, TNA KV 4/113.
88
 âPrincipal German Espionage Agents captured in the United Kingdom by M.I.5, 1909 to 1919', May 1919, TNA KV 4/114.
89
 âBacon, George Vaux', âGame Book', vol. 2: 1916â1937, TNA KV 4/113.
90
 Boghardt,
Spies of the Kaiser
,
pp. 136
â
7
.
91
 Draft G Branch History, ch. 12,
pp. 155ff
., TNA KV 1/43. âBacon, George Vaux', âGame Book', vol. 2: 1916â1937, TNA KV 4/113.
92
 MI5's first foreign double agent had been the German spy Armgaard Karl Graves, recruited by Kell in 1912. Graves, however, deceived both Kell and German intelligence. See above,
pp. 40
â
41
. The first wartime double agents were two Indians recruited in October 1915 to report on German attempts to subvert the British Raj. See below,
p. 92
.
93
 âWife Sues Editor Whytock',
New York Times
, 9 Sept. 1911.
94
 Whytock's identity and role are revealed in âBacon, George Vaux', âGame Book', vol. 2: 1916â1937, TNA KV 4/113. Further details (though not Whytock's identity) are contained in Draft G Branch History, ch. 12,
pp. 160ff
., TNA KV 1/43.
95
 Captain Roslyn Whytock's position in US military intelligence was mentioned by the
New York Times
on 30 Oct. 1918 in a report on an injury suffered by his brother, Lieutenant Norman R. Whytock, while fighting in France.
96
 âBacon, George Vaux', âGame Book', vol. 2: 1916â1937, TNA KV 4/113.
97
 Boghardt,
Spies of the Kaiser
,
p. 138
.
98
 Andrew,
Secret Service
,
pp. 169
â
77
.
99
 Andrew,
For the President's Eyes Only
,
pp. 31
â
46
.
100
 âGame Book', vol. 1: 1909â1915, TNA KV 4/112; vol. 2, 1916â1937, TNA KV 4/113. A post-war MI5 count of âpersons convicted of espionage, treason &c' also arrived at a figure of sixty-five; âCertain Offences against the Defence of the Realm Regulations 1914â1919.
Estimate of Cases leading to conviction or executive action, as dealt with by the Security Service (Approximate figures)', TNA KV 4/114.
101
 The names and/or codenames of agents recorded in German archives are listed in Boghardt,
Spies of the Kaiser
,
appendix 3
.
102
 The first three names on Dr Boghardt's list fit this category. In many other cases details of agents' roles have not survived. Ibid.
104
 Security Service Archives. On COMO's first attempt to track down German spies in Britain who were out of contact, see above,
p. 72
.
105
 After the First World War, numerous authors published accounts of alleged German secret missions to Britain, most of which have since proved to be vastly exaggerated or wholly invented. In a book entitled
The Invisible Weapons
, published in 1932, Jules Crawford Silber claimed he had conveyed a wealth of critical information to Berlin which he had obtained while working as a British censor in Edinburgh. Dr Boghardt, among others, has doubted the truth of Silber's claim, arguing that there is no trace of a âSilber' in German archives, and pointing out that Silber revealed in his book only information that was already in the public domain. In the wartime censors' office the names of known German agents and their addresses were written on large blackboards, for all the censors to see. Had this information really been passed to German intelligence, it would presumably have lost fewer of its main British agents. As Boghardt notes, however, German records on the 120 wartime agents sent to Britain are far from complete. Boghardt,
Spies of the Kaiser
,
pp. 97
,
109
.
106
 E Branch History, ch. 11,
pp. 134
â
5
, TNA KV 1/34.
107
 Ibid.
108
 Simpson, âDuties of Local Authorities in War Time',
pp. 5
â
30
. Mellor, âStatus under the Hague Conference of Civilians who Take up Arms during the Time of War',
pp. 559
â
78
. Ovens, âFighting in Enclosed Country',
pp. 524
â
46
.
109
 Boghardt,
Spies of the Kaiser
. Several accidental explosions aboard transatlantic shipping were also wrongly blamed on Sektion P.
110
 Boghardt,
Spies of the Kaiser
,
pp. 122
â
3
. Andrew,
For the President's Eyes Only,
p. 37
.
111
 Basil Thomson was surely right to argue, âThe Germans made great use of sabotage in America. Unquestionably, they would have done the same in England if they could . . .' Thomson,
Queer People
,
p. 194
.
112
 F Branch Report, TNA KV 1/36. By August 1915, F Branch, headed by Holt-Wilson, contained six officers and seven clerks.
113
 Branch nomenclature during MO5(g)'s rapid expansion in 1915 was fluid and somewhat confusing. On its foundation in August 1915, E Branch was commonly referred to as MO5(e). As part of a larger War Office reorganization of MO5, the three existing branches were renamed. MO5(g)A (counter-espionage) became MO5(a); MO5(g)B (aliens, DORA and preventive security) became MO5(f); and MO5(g)C (records, personnel, administration) became MO5(h). These four branches became collectively known as MI5 on 3 January 1916. âHistorical Sketch of the Directorate of Military Intelligence during the Great War of 1914â1919', TNA WO 32/10776.
114
 Security Service Archives.
115
 Security Service Archives.
116
 A surviving letter from Major Money to Hinchley Cooke in 1916 begins, âMy dear old Koch'. Security Service Archives.
117
 âBoehm, Captain Hans W @ Thrasher, Jelks Leroy', âGame Book', vol. 2: 1916â1937, TNA KV 4/113.
118
 German naval documents captured after the Second World War revealed that plans to set up a shipping agency as cover for intelligence operations which included the contamination and poisoning of cargoes bound for enemy ports had begun before the First World War. Security Service Archives.
119
 Boghardt,
Spies of the Kaiser
,
pp. 133
â
4
.
120
 Major J. F. C. Carter (MI5), âAlfred Hagn. Alleged German agent', 30 May 1917, CUL Templewood Papers. Boghardt,
Spies of the Kaiser
,
p. 130
.
121
 âF-Branch Report: Preventative Security',
p. 9
, TNA KV 1/35.
122
 General Staff Paper, âThe Organization of the Services of Military Secrecy, Security and Publicity', Oct. 1917,
p. 44
, TNA INF 4/9.
123
 Though offering an implausible analysis of her involvement in wartime espionage, Howe,
Mata Hari
, successfully dismantles the pre-war myths constructed by Zelle about her upbringing and early career.
124
 Zelle's two-volume MI5 file is in TNA KV 2/1â2.
125
 Thomson,
Queer People
,
pp. 182
â
3
.
126
 TNA KV 2/2.
127
 Howe,
Mata Hari
,
pp. 11
â
12
.
128
 H. A. Pakenham (Paris) to R. D. Waterhouse, 28 Nov. 1917, TNA KV 2/2.
129
 Bird, âControl of Enemy Alien Civilians'.
130
 According to later MI5 statistics, it recommended 354 aliens for deportation, 226 âpersons of hostile origin or association' for internment, 650 âsuspected persons' for exclusion from certain areas, and 25 âhostile persons' to be made subject to other personal restrictions. âCertain Offences against the Defence of the Realm Regulations 1914â1919. Estimate of Cases leading to conviction or executive action, as dealt with by the Security Service (Approximate figures)', TNA KV 4/114.
131
 After the war Holt-Wilson wrote an enthusiastic reference for Hinchley Cooke. Security Service Archives.
132
 Holt-Wilson, âMemorandum on the Military Inexpediency of permitting persons of German blood to remain at large during the present organization of this country for war', 15 June 1915, TNA KV 1/65,
pp. 271
â
5
.
135
 Thomson,
Scene Changes, passim
.
136
 Holt-Wilson, âSecurity Intelligence in War', 1934, IWM Kell MSS.
137
 Drake to Admiral Hall, 1 Nov. 1932, CCAC HALL 1/3. An MI5 summary of espionage cases over the previous decade confirms that âThere is no instance on record of any spy, enemy agent, sub-agent or associate having been discovered, detected or captured as a result of original information obtained or supplied by Scotland Yard or any of the Civil Police of the United Kingdom.' âPrincipal German Espionage Agents captured in the United Kingdom by M.I.5, 1909â1919', TNA KV 4/114, s. 8a.
138
 Bell to Leland Harrison, 2 May 1919, enclosing memo on British intelligence, Library of Congress, Leland Harrison MSS.
139
 Newman,
Speaking from Memory
,
p. 93
.
Chapter 3: The First World War:
Part 2 â The Rise of Counter-Suberversion
2
 339 of the departures occurred in 1918. Security Intelligence Service Seniority List and Register of Past and Present Members, December 1919.
3
 Security Intelligence Service Seniority List and Register of Past and Present Members, December 1919.
4
 Kell was also at work on Christmas Day, 1916; see below,
p. 97
.
5
 H Branch Report, Security Service Archives. Much of the increase in the card index during the later stages of the war was due to the MI5 Ports Police. A memoir of the Registry records that by 1917 the card index filled 748 large boxes; Security Service Archives. A later head of Registry believes that each box was capable of holding up to a thousand cards.
6
 Only vol. 24 of the Black List, dated October 1918, survives in MI5 records, containing names numbered from 10914 to 11275; TNA KV 1/61. By this time the suspects were global in range, from as far afield as North and South America, Japan and Polynesia. Some names had been supplied by the French, Belgian and US liaison.
7
 Security Service Archives.
8
 Security Service Archives.
9
 W. E. Hinchley Cooke to DG (Petrie), âMotor-car purchased by MI5 out of German Secret
Service Funds during the 1914â18 War', 29 June 1943, TNA KV 4/200. By a curious coincidence, which some might interpret as conspiracy, Cumming's official car was also stolen.
10
 âHistorical Sketch of the Directorate of Military Intelligence during the Great War of 1914â1919', TNA WO 32/10776.
11
Â
Security Service
,
p. 98
. There are minor discrepancies between Curry's and other figures.
12
 Boghardt,
Spies of the Kaiser
,
pp. 117
â
18
.
13
 Two telegrams marked âPrivate and Secret' from Findlay (Christiania) to FO, 30 Oct. 1914, with minutes by Grey, TNA MEPO 2/10660. Details of several Irish agents who also provided intelligence on Casement to British intelligence agencies still remain classified in order to maintain government policy of neither confirming nor denying the names of former agents.
14
 Copies of Casement to MacNeill, 28 Nov. 1914, with covering letter from Casement to Mrs A. S. Green, TNA KV 2/8. The letter to Mrs Green is quoted in Sawyer,
Casement
,
p. 119
.
16
 Andrew,
Secret Service
,
p. 356
. Frank Hall, then a captain, had joined MO5(g) in December 1914; Security Intelligence Service Seniority List and Register of Past and Present Members, December 1919.
17
 Dudgeon,
Roger Casement â The Black Diaries,
pp. 481
â
5
.
18
 Security Service Archives.
19
 Churchill too admired Hall's expertise. Churchill to Lord French, 17 April 1919, CCAC CHAR 16/6.