What is the Central Security Service (US)?

Introduction The Central Security Service (CSS) is a combat support agency of the United States Department of Defence which was established in 1972 to integrate the National Security Agency (NSA) and the Service Cryptologic Components (SCC) of the US Armed Forces in the field of signals intelligence, cryptology, and information assurance at the tactical level.… Read More


What is the National Security Agency (US)?

Introduction The National Security Agency (NSA) is a national-level intelligence agency of the United States Department of Defence, under the authority of the Director of National Intelligence (DNI). The NSA – a combat support agency – is responsible for global monitoring, collection, and processing of information and data for foreign and domestic intelligence and counterintelligence… Read More

What is a Combat Support Agency?

Introduction Combat support agency (CSA) is a designation by the United States Department of Defence (DoD) of those defence agencies that provide department-level and tactical support to the US military during combat operations. Background The designation was first outlined by the Goldwater-Nichols Department of Defence Reorganisation Act of 1986, with subsequent additions based on the… Read More