COPY 1910 K Street N.W. Decatur 9000 Washington 6, D.C. Extension 157 BRITISH JOINT SERVICES MISSION (ARMY STAFF) SD. W. & T. BRANCH RESTRICTED SDWT/OL/D Under Secretary of State for War, 27 April 1949 Director of Weapons and Development, The War Office, Whitehall, London S.W.1. Subject: Colour Systems for Intelligence Plots 1. For a long time now discussions have been proceeding on the standardization of a colour system for "strategical and operational plots and maps". As you will be aware, the colour system proposed is as follows: U.S.A.