One goal of the marshall plan 1947 was to

The Marshall Plan's goal was to rebuild war-torn areas, modernize industry, bolster the European economy, and facilitate international trade. It was an initiative to rebuild Western Europe and was drafted by Secretary of State George Marshall

An informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.