In March 1971, with the limitation and control of armaments becoming a matter of growing concern and analysis in public circles, the Agency for the Control of Armaments (ACA) of Western European Union (WEU) circulates a memorandum on its origins and missions and the resources at its disposal, as well as the various controls and inspections that the Agency has to carry out. The note ends with a series of considerations on the ACA’s contribution to WEU’s armaments control activities, particularly emphasising the fact that it is the only experimental laboratory in armaments control techniques.