1947 – Thomas Karamessines (CIA) gründet griechischen Geheimdienst Timelines: N-Griechenland, O-CIA Aktivitäten1942-1999, US-Imperialismus

Karamessines served in the United States Army during the Second World War, but because of his knowledge of Greek language and history was assigned to the Office of Strategic Services (OSS), an organization that eventually would transform into the Central Intelligence Agency in 1948.

Karamessines started out his intelligence career as analyst for the Greek Desk OSS/X2 (Counter-Intelligence) following the liberation of Greece.

After the dissolution of the OSS in October 1945, Karamessines stayed on as the director of intelligence for the US Embassy, possibly at the request of Lincoln MacVeagh.

He became a member of the CIA after that organization was established in September 1947 and eventually CIA Station Chief in Athens.

Karamessines came to work in the Office of Policy Coordination (OPC), the espionage and counter-intelligence branch of the CIA created in 1948, directed by Frank Wisner.

At the very beginning, the agency appointed an anticommunist role, as the country was under the consequences of the civil war and all the countries at the northern borders, were under communist regimes.

KYP was controlled by the CIA; in the first eleven years of its history (1953–1964) its agents received their salaries from the Americans, not the Greek state, until Prime Minister Georgios Papandreou, enraged with this level of dependence, stopped this practice. During the Regime of the Colonels (1967–1974), KYP actively continued its anticommunist action.