TO BE KEPT UNDER LOOK AND KEY. It In requested that special care may be taken to ensure the secrecy of this document. (THIS DOCUMENT IS THE PROPERTY OF HIS BRITANNIC MAJESTY'S GOVERNMENT) S E C R E T J.I.C.(41) 361 (Restricted Circulation) COPY No. 13 9TH SEPTEMBER, 1941 WAR CABINET JOINT INTELLIGENCE SUB-COMMITTEE. TRANSMISSION OF SUMMARIES FROM CHIEFS OF STAFF COMMITTEE TO COMMANDERS-INCHIEF ABROAD. Memorandum by the Director of Naval Intelligence It is the present practice to send messages from the Chiefs of Staff, which are addressed to Senior Officers abroad of the three Services, by Naval channels in Naval Cypher and by Army channels in War Office Cypher.