This article in an attempt to explore and study the psychological operations (PSYOP) organizations that were formed during World War II. It is a story in progress. As new organizations and connections between such organizations are found, the article will be updated. This article is mostly concerned with the war in Europe. A separate article will discuss . Many of the numbers of leaflets and newspaper printed are estimated. The number of printed products produced during World War II are in the billions, so it is difficult to be accurate. All the numbers mentioned in this article are from published references, but they do sometimes conflict.


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