EDC was a proposed joint Western European military force, at the time favored over admitting Germany to NATO.
The General Treaty (German: Deutschlandvertrag) of 1952 formally named the EDC as a prerequisite of the end of Allied occupation of Germany.
Belgium was represented by Paul-Henri Spaak, Canada by Lester B. Pearson, France by Pierre Mendès-France, Germany by Konrad Adenauer, Italy by Gaetano Martino, Luxembourg by Joseph Bech, the Netherlands by Jan Willem Beyen, the United Kingdom by Anthony Eden, and the United States by John Foster Dulles.
The powers met again in Paris on October 20–23, in an intergovernmental conference followed by a NATO Council meeting, to put the decisions reached in London into formal declarations and protocols to existing treaties.
I Modifying and Completing the Brussels Treaty" formally added West Germany and Italy to the Brussels Treaty, creating the Western European Union (WEU), which, while not as broad or powerful as the previously proposed EDC, nevertheless was sufficient for the Deutschlandvertrag to come into force and therefore to end the occupation of West Germany and admit it as an ally in the Cold War.
This agreement allowed West Germany to start a limited rearmament program though it banned development of certain weapons, such as large warships.
It was signed by the Brussels Treaty countries (Belgium, France, Great Britain, Luxembourg, and the Netherlands) and by West Germany and Italy.