It is you, the voting European citizen who is responsible for both closer integration of Europe and for Europe to have its own defense capabilities. You can't have your cake and eat it too.
"The Marshall Plan aid was mostly used for the purchase of goods from the United States. (...) In the latter years, under pressure from the United States Congress and with the outbreak of the Korean War, an increasing amount of the aid was spent on rebuilding the militaries of Western Europe. Of the some $13 billion allotted by mid-1951, $3.4 billion had been spent on imports of raw materials and semi-manufactured products; $3.2 billion on food, feed, and fertilizer; $1.9 billion on machines, vehicles, and equipment; and $1.6 billion on fuel"
http://en.wikipedia.org/wiki/Marshall_Plan#German_level_of_i...
I might have misunderstood your "America poured in money during the Marshall plan to build up Europe;".
I took it as the purpose was to build up Europe for Europeans, where my reply was to build up Europe to create a market for US companies.
Yes it has, estimated to be 0.5pp in the GDP of the countries affected in 1948-1951.