SECRET. The War Office, Whitehall, D.D.M.I/18. S.W.1. September, 1939. Reference J.I.C. (39)1 of 6th September, 1939. It has been represented that the production of a summary of events which have taken place in the previous week up to mid-day on Thursdays will entail some duplication of work in the Service departments who already produce material for a weekly J.I.C. commentary up to mid-day on Wednesdays. To obviate this it is suggested that the weekly J.I.C. Commentary be put forward in future by one day to include information up to mid-day on Thursdays.