0087

File Title War Cabinet. Joint Intelligence Sub-Committee. Meetings. September 1939 - November 1940. Numbers 1-18 & (40) 1-70. Volume II
Reference CAB 81/87
Date 1939 - 1940
Government Department Cabinet Office
File Accession Date 1970

Description

A volume of meeting minutes of the Joint Intelligence Sub-Committee (JIC). The JIC was formed of representatives from the intelligence services, the armed services, and the Foreign Office. Its purpose was to assess military, security, and foreign policy requirements and coordinate Britain’s intelligence organisations accordingly. The JIC members discussed a vast range of international and domestic issues in their meetings. In this file, subjects documented include British propaganda and censorship; contingency planning for the outbreak of war with Italy; preparations for combatting German offensives in the Netherlands, and for the defence of southern England; the recruitment and organisation of British citizens abroad; the assessment of German productive capacity and manpower; British domestic security measures, including the arrest and imprisonment of aliens; the treatment of British and enemy prisoners of war; possible German secret weapons, including poison gas; the Soviet threat to the Middle East; and the coordination of scientific research.

Document Title Date
i Front Cover Download PDF (2.19 MB)
iii Table of Contents Download PDF (8.21 MB)
1 1. Wilhelmshaven. Publicity for R.A.F. Raid on:; 2. Naval, Military, and Air Situation. Weekly Resume of:; 3. Intelligence Dept. Of Ministry of Economic Warfare. Monthly Reports by: Statement on, Noted; 4. Daily and Weekly Reports of the Sub-Committee. Precautions for Security of: 7 September 1939 Download PDF (1.69 MB)
2 1. International Law. German Observance:; 2. Egypt. Communication in Cypher by Italian Consuls in: 11 September 1939 Download PDF (1.65 MB)
3 1. Anglo-French Cypher; 2. Middle East. Communication of Information to Commanders-in-Chief in:; 3. Naval, Military, and Air Situation. Weekly Resume; 4. International Law: German Observance 15 September 1939 Download PDF (2.11 MB)
4 1. International Law. German Observance:; 2. Middle East Intelligence Centre. Scope of:; 3. Information for Ambassadors. Abroad; 4. Dodecanese. Operations for Capture of:; 5. Secret Documents. Despatch by Air 23 September 1939 Download PDF (3.13 MB)
5th 1. Holland and Belgium. Overrunning of: Measures to be Taken in Event of:; 2. Anglo-French Cypher; 3. Coast Defence Intelligence; 4. Naval, Military and Air Situation. Weekly Resume of: 29 September 1939 Download PDF (1.51 MB)
6th 1. Anglo-French Cypher; 2. Holland and/or Belgium. Over-Running of, by Germany: Measures to be Taken in the Event of: 2 October 1939 Download PDF (1.32 MB)
7th 1. German Secret Weapon; 2. Holland and/or Belgium. Over-Running of, by Germany: Measures to be Taken in the Event of: 6 October 1939 Download PDF (1,008 KB)
8th 1. Aden. Security and Service Organisation at:; 2. International Law. German Observance; 3. German Secret Weapon 20 October 1939 Download PDF (1.87 MB)
9th 1. Middle East Intelligence Centre Organisation of:; 2. Weekly Commentary; 3. Allied Commanders Overseas. Exchange of Secret Communications between 27 October 1939 Download PDF (1.75 MB)
10 1. Alarmist Reports; 2. Prisoners of War. German: Photographs and Interviews of:; 3. International Law. German Observance: 3 November 1939 Download PDF (1.85 MB)
11 1. Russia. Oil Supplies. Vulnerability of:; 2. Prisoners of War. German: Photographs and Interviews of: 17 November 1939 Download PDF (1.37 MB)
12 1. German Intentions. Possible: 28 November 1939 Download PDF (1.20 MB)
13 1. Middle East Intelligence Centre; 2. Middle East. G.H.Q. Intelligence Security Section; 3. Information to Commanders-in-Chief Home Fleet, Home Forces, and Fighter and Bomber Commands; 4. Russia. Oil Supplies. Vulnerability of:; 5. German Intentions. Possible: 1 December 1939 Download PDF (1.97 MB)
14 1. Middle East. G.H.Q. Intelligence Security Section: Telegram for Despatch in Connection with Establishment of: (Anx. I) 7 December 1939 Download PDF (2.12 MB)
15 1. J.I.C. Papers. Circulation of: 9 December 1939 Download PDF (935 KB)
16 1. Middle East. Soviet Threat to British Interests in:; 2. Daily Secret Situation Reports 15 December 1939 Download PDF (1.53 MB)
17 1. Germany. Possible Action in Spring of 1940 17 December 1939 Download PDF (1.25 MB)
18 1. Weekly Commentary. Discontinuation of: 31 December 1939 Download PDF (1.44 MB)
1st 1. Italian African Possessions. Economic Intelligence About:; 2. Middle East. Soviet Threat to British Interests in: 23 January 1940 Download PDF (1.37 MB)
2nd 1. Scientific Intelligence. Co-ordination of:; 2. Foreign Office Reports; 3. Anglo-Franco-Russian Staff Conversations; 4. Germany. Possible Action in the Spring of 1940 31 January 1940 Download PDF (3.04 MB)
3rd Plans. Security of: 8 February 1940 Download PDF (945 KB)
4th Security Measures 13 February 1940 Download PDF (918 KB)
5th 1. Middle East. Intelligence in:; 2. Abyssinia and Libya. Propaganda in:; 3. Intelligence Activities. Co-ordination of: 16 February 1940 Download PDF (3.20 MB)
6th Germany. Possible Action by: 19 February 1940 Download PDF (947 KB)
7th Plans. Security of: 20 February 1940 Download PDF (985 KB)
8th 1. Plans. Security of:; 2. Liaison Officers. Despatch of, by Air: 26 February 1940 Download PDF (1.46 MB)
9th Assessment of German Productive Capacity 29 February 1940 Download PDF (2.26 MB)
10th Plans. Security of: 29 February 1940 Download PDF (956 KB)
11th 1. German Productive Capacity. Assessment of: Draft Terms of Reference. (Annex); 2. German Propaganda. Examination of: 5 March 1940 Download PDF (2.99 MB)
12th 1. Plans. Security of:; 2. Inter-Services Security Board. Permanent Establishment of:; 3. Next Meeting of the Sub-Committee 6 March 1940 Download PDF (1.36 MB)
13th 1. Plans. Security of:; 2. Inter-Services Security Board. Permanent Establishment of:; 3. Inter-Services Project Board; 4. International Law. German Observance 12 March 1940 Download PDF (2.62 MB)
14th 1. Plans. Security of:; 2. Inter-Services Security Board. Permanent Establishment of:; 3. Preparation of Reports for C.O.S. 15 March 1940 Download PDF (2.04 MB)
15th 1. Ireland. Control of Telephone Conversations with:; 2. Anglo-French Security Measures; 3. Inter-Services Project Board; 4. Russo-Finnish Treaty. Strategic Implications of: 21 March 1940 Download PDF (2.69 MB)
16th 1. German Productivity. Assessment of: Conclusions Reached of Meeting between Representatives of Ministry of Economic Warfare and War Office Held to Discuss German Gun Production. (Annex) 21 March 1940 Download PDF (3.34 MB)
17th 1. Germany. Assessment of Productivity. Manpower:; 2. Germany. Assessment of Productivity. Interim Report; 3. Germany. Assessment of Productivity. Questionnaires Prepared by the Service Departments 27 March 1940 Download PDF (2.07 MB)
18th 1. Security Measures; 2. Preparation of Papers for C.O.S.; 3. Allied Military Committee. Co-operation with:; 4. Next Meeting 1 April 1940 Download PDF (2.71 MB)
19th 1. Russian Oil Supplies; 2. Security Measures; 3. Plans. Security for:; 4. German Propaganda 8 April 1940 Download PDF (2.01 MB)
20th 1. Germany. Possible Intentions. Draft Report Considered 11 April 1940 Download PDF (1.29 MB)
21st Scandinavian Intelligence Summary. Arrangements for Preparation for M.C. Committee 13 April 1940 Download PDF (1.54 MB)
22nd 1. Intelligence Reports. Grading of:; 2. North Russian Waters. Reconnaissance of:; 3. Information to Service Authorities Abroad; 4. Italy. Possible Reactions to the Present Situation; 5. Possible Developments of the Present Situation; 6. Anglo-French Security Measures; 7. Security Measures; 8. Next Meeting of the Sub-Committee 19 April 1940 Download PDF (2.53 MB)
23rd 1. Germany. Possible Intentions towards Sweden 21 April 1940 Download PDF (1.28 MB)
24th 1. Major A.N. Barbard. Death of:; 2. Periodical Intelligence Reports; 3. Inter-Services Project Board; 4. U.K. German Invasion of:; 5. Joint Intelligence Sub-Cttee. Increase of Staff: 23 April 1940 Download PDF (3.92 MB)
25th 1. Holland. German Invasion of, Without a Simultaneous Attack on Belgium; 2. Periodical Appreciations for the C.O.S.; 3. Neutral Countries - Effect of German Successes in Norway; 4. Daily Scandinavian Intelligence Summary; 5. U.K. German Invasion of:; 6. Next Meeting 26 April 1940 Download PDF (1.93 MB)
26th 1. U.K. German Invasion of:; 2. Spelling of Place Names in Scandinavia 1 May 1940 Download PDF (2.95 MB)
27th 1. U.K. "Fifth Column" Activities in:; 2. Scandinavia. Spelling of Place Names in: 3 May 1940 Download PDF (1.36 MB)
28th 1. Tour D'horizon; 2. S.E. Europe. German Intentions in:; 3. Middle East Intelligence Centre; 4. Soviet Union. Intelligence Regarding: 7 May 1940 Download PDF (2.28 MB)
29th 1. Air Invasion. Security Measures Against:; 2. Intelligence Summaries. Production by Joint Intelligence Sub-Committee and Service Departments; 3. Western Front. Situation on:; 4. Tour D'horizon. Middle East. Italy 15 May 1940 Download PDF (4.76 MB)
30th 1. Dutch East Indies. Possible Japanese Action Against:; 2. Australian Government. Appreciation of the Air Situation for: 16 May 1940 Download PDF (1.37 MB)
31st 1. Topographical Intelligence 17 May 1940 Download PDF (1.29 MB)
32nd "Fifth Column" Activities in the U.K. 21 May 1940 Download PDF (1.30 MB)
33rd 1. United Kingdom - East Kent. Possible German Invasion of:; 2. Urgent Intelligence Reports; 3. Soviet Union. Intelligence Regarding:; 4. Arrangements for Transaction of J.I.C. Business in Event of Evacuation 21 May 1940 Download PDF (1.75 MB)
34th 1. Topographical Information; 2. Aliens; 3. U.K. German Action Against:; 4. Italian Situation; 5. M.I.6, M.I.5, and Ministry of Economic Warfare. Representation on Joint Intelligence Sub-Committee; 6. Portugal 24 May 1940 Download PDF (2.52 MB)
35th 1. U.K. "Fifth Column" Activities in:; 2. Early Warning of Invasion 25 May 1940 Download PDF (2.66 MB)
36th 1. Certain Operations; 2. Operations Pending or in Progress. Secrecy RE:; 3. Italy. Possible Military Courses Open to:; 4. Daily Summary. Grading of Reliability of Reports in:; 5. "Fifth Column" Activities; 6. Early Warning of Invasion 28 May 1940 Download PDF (1.88 MB)
37th 1. Aliens. Employment by Officers; 2. Early Warning of Invasion; 3. British Troops and Germans Wearing British Uniform. Provision of Markings to Differentiate between:; 4. Middle East Intelligence Centre; 5. Topographical Intelligence; 6. "Fifth Column" Activities 30 May 1940 Download PDF (2.66 MB)
38th Minutes of the Thirty-Eighth Meeting of the Sub-Committee held at Richmond Terrace, S.W.1., on Saturday, 1st June, 1940, at 11.0 am 1 June 1940 Download PDF (2.17 MB)
39th 1. Iceland. Telegram from: Cable to Be Despatched to Officer Commanding Troops in Iceland. (Annex); 2. Dominion Military Headquarters. Information to: Telegram for Transmission to Premier of New Zealand (Anx: II) 5 June 1940 Download PDF (2.25 MB)
40th 1. German Mustard Gas Spray Attack. Possible Scale of, on This Country; 2. Allied Military Committee. Co-operation with:; 3. Northern France. Large Calibre German Guns in: Mounting of:; 4. Netherland East Indies. Relationship with:; 5. U.K. German Invasion of: 6 June 1940 Download PDF (2.70 MB)
41st 1. Home Defence Inter-Services Intelligence Section; 2. Neutral Countries Which May Become Allies. Action Required in:; 3. Evacuation of Government and Service Ministries in the Event of Air Attack; 4. Telephone Conversations in the U.K. In Foreign Languages; 5. Defence. Bluff in:; 6. Netherlands East Indies. Relations with:; 7. Evacuation of Government Departments. Arrangements for the Joint Intelligence Sub-Committee 8 June 1940 Download PDF (4.29 MB)
42nd Withdrawal Notice Sent 11/6/40 10 June 1940 Download PDF (892 KB)
43rd Italian Embassies and Italian Consulates. Desirability of Preventing Staffs of, Having Access to Telephonic and Telegraphic Facilities 12 June 1940 Download PDF (2.26 MB)
44th Requirements of the Intelligence Staff of the Commander-in-Chief, Home Forces, to be Located at the Central War Room 14 June 1940 Download PDF (2.02 MB)
45th 1. Spain. Probable Attitude of:; 2. Cyphers. Possible German Knowledge of Our:; 3. Government and Service Ministries. Evacuation of, in the Event of an Invasion; 4. Germany. Situation in: Preparation of Appreciation 14 June 1940 Download PDF (3.05 MB)
46th 1. Fifth Column B.B.C. Security Measures Explained; 2. Home Security. Avoidance of Duplication:; 3. Evacuation from Towns on the South Coast: 18 June 1940 Download PDF (2.79 MB)
47th 1. Combined Intelligence Centre. Development of the Combined Intelligence Committee into:; 2. Security Problems in Connection with the French Mission in London and Questions Arising Therefrom:; 3. Procedure. Draft Joint Intelligence Sub-Committee Reports Etc:; 4. Germany's next Move 1 July 1940 Download PDF (2.87 MB)
48th French Missions and Committees in the U.K. Security of Certain Written Information in the Hands of: 3 July 1940 Download PDF (2.02 MB)
49th 1. British Communities in Foreign Countries. Organisation of:; 2. Smoke. Use in an Invasion of Great Britain; 3. Eire. Telegrams from Enemy Legations in, and from Neutral Embassies in, and the U.K.; 4. Internees and Prisoners of War. Exchange or Release of:; 5. Yellow Fever. Possible Use of Rhesus Monkeys; 6. Intelligence Section - Advanced G.H.Q., Home Forces 5 July 1940 Download PDF (3.23 MB)
50th "Inspired Rumours"; Action Designed to Disconcert the Enemy in Relation to the Invasion of U.K. 6 July 1940 Download PDF (3.37 MB)
51st 1. British Propaganda in Time of War; 2. Rumours; 3. British Communities Abroad. Draft Instructions to Officers Examining the Organisation of:; 4. Daily Summaries. Preparation of: Procedure If Active Operations are Undertaken Against the British Isles; 5. Jamming German Wireless Broadcasts War Office Taking up with the Ministry of Information Necessity and Technical Feasibility of Jamming New British Broadcasting Station and the Workers' Chanenge Station; 6. Certain Operations. Security of:; 7. British Communities in Foreign Countries. Organisation of: 17 July 1940 Download PDF (5.88 MB)
52nd 1. Officers Visiting British Communities in Neutral Countries. Instructions to:; 2. Welfare of British Communities Abroad; 3. Battle for Britain; 4. Sea and Land Raids; 5. Naval and Shipping Movements in Algerian, Moroccan and S. French Ports. Importance of Obtaining Information RE:; 6. Intelligence from Enemy, and Enemy Occupied Territories; 7. British Propaganda in Time of War. Policy to be Followed. Question Raised; 8. Representation of C.-in-C., Home Forces, on the Combined Intelligence Committee 22 July 1940 Download PDF (3.93 MB)
53rd 1. Sea and Land Raids; 2. British Communiques; 3. "Front Line Reports"; 4. Propaganda Concerning Enemy Parachutists and Airborne Troops; 5. Daily Secret Situation Reports; 6. Propaganda and Rumour; 7. Soviet Foreign Policy; 8. Spanish and Portuguese Reactions to Demands Likely to be Made by Germany and Italy; 9. Home Defence. Co-ordination of Action; 10. Corinth Canal 31 July 1940 Download PDF (4.52 MB)
54th 1. British Communiques for Foreign Countries; 2. Middle East Intelligence Centre. Provision of Intelligence to: 8 August 1940 Download PDF (1.99 MB)
55th 1. (a) British Propaganda in Time of War; 1. (b) Front Line Reports; 1. (c) Propaganda and the Home Front; 2. Dominion Wire; 3. Propaganda and Rumour; 4. Propaganda and Rumour; 5. Propaganda in Enemy Countries; 6. Suggestions for Rumours and Propaganda Junior Members of Joint Intelligence Sub-Committee to Consider at Weekly Intervals 15 August 1940 Download PDF (4.41 MB)
56th 1. Dominions Wire. Intelligence Information for Inclusion in:; 2. U.S. Ambassador in London. Supply of Information to:; 3. Plans to Mystify and Mislead the Enemy; 4. Drugs. Military Use of:; 5. Supreme War Council Documents; 6. Propaganda and Rumour; 7. Fifth Column Activities in the U.K. Foreign Office to Prepare Draft Paper on:; 8. General De Gaulle's Absence from This Country. Cover to Account for: 27 August 1940 Download PDF (2.72 MB)
57th 1. U.K. Seaborne Invasion of:; 2. Anglo-American Standardisation of Arms Committee. Draft Minute to the Secy., C.O.S. Committee, Circulated to Directors by the Secretary, 4.9.40. 5 September 1940 Download PDF (2.48 MB)
58th 1. Operations. Security of:; 2. Mr. Dalton. Appointment of:; 3. Topographical Information 6 September 1940 Download PDF (2.74 MB)
59th 1. Dominions Wire; 2. Daily Telegram to Service Attaches Abroad; 3. Intelligence. Provision for Planning; 4. Intelligence. Provision for Planning. Security Measures; 5. Czechs. Employment by Officers; 6. Drugs of the Benzendrine Series. Military Use of:; 7. Operational Planning 25 September 1940 Download PDF (3.36 MB)
60th 1. Air Raid Damage. Publicity Re: 27 September 1940 Download PDF (2.11 MB)
61st Possible Axis Intentions 10 October 1940 Download PDF (1.45 MB)
62nd 1. British and American Censorship Systems. Need for Preparation of Plans for Co-ordination; 2. Enemy Aliens; 3. French Wounded. Repatriation of:; 4. Foreign Artistes. Employment of, by E.N.S.A.; 5. Gas. Use of, by Germany; 6. Supply of Arms of German Manufacture to Brazil; 7. Japan. Preparedness for War with: 22 October 1940 Download PDF (4.23 MB)
63rd 1. Prisoners of War. General Treatment of:; 2. Prisoners of War. Exchange of:; 3. Transport Facilities in Neutral Countries. Materials for Maintenance and Improvement of:; 4. Ports. Security of:; 5. Singapore. Period of Warning of an Attack on:; 6. Discussion of a Certain Matter 25 October 1940 Download PDF (4.54 MB)
64th Ireland. Enemy Invasion of: 31 October 1940 Download PDF (1.01 MB)
65th 1. Exchange of Prisoners of War; 2. Provision of Intelligence for Special Operations Executive; 3. Decoys. Intelligence Aspect of Employing:; 4. Federal Telephone System. Security of:; 5. Communications in Neutral Countries. Material for Maintenance and Improvement of:; 6. Syria. Axis Action Against: 1 November 1940 Download PDF (3.62 MB)
66th 1. Intelligence; 2. Daily Summaries 7 November 1940 Download PDF (1.89 MB)
67th 1. Intelligence; 2. Ireland. Travel to:; 3. British and American Censorship. Need for Preparation of Plans for Co-ordination; 4. Prisoners of War. Exchange of:; 5. Latin-American Flying Officers. Visit of Suitable, to This Country; 6. Basic Industrial Intelligence 11 November 1940 Download PDF (4.11 MB)
68th Note by Secy. Circulating Minutes of Meeting with Director of Plans Held 6.11.40 (J.P.(40)126th Mtg.) 8 November 1940 Download PDF (2.24 MB)
69th 1. Equatorial Africa. French Action in:; 2. Ports. Security at:; 3. Code Names; 4. Formation of an Enemy Planning Section 18 November 1940 Download PDF (4.23 MB)
70th Formation of an Enemy Planning Section 21 November 1940 Download PDF (3.81 MB)
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