"The problem for the Truman administration that fall of 1945 was that no one, including the President, knew just what he wanted, while each department and intelligence service knew fully what sorts of results it wanted to avoid. With this context in mind, it is informative to view the formation of CIG with an eye toward the way administration officials preserved certain essential functions of OSS and brought them together again in a centralized, peacetime foreign intelligence agency. Those decisions created a permanent intelligence structure that, while still incomplete, preserved some of the most useful capabilities of the old OSS while resting on a firmer institutional foundation."
Center for the Study of Intelligence: https://www.cia.gov/library/center-for-the-study-of-intelligence/index.html
Studies in Intelligence (1996), v.39 no.5