This short academic study is the most current, up-to-date summary of public domain information about the work of Army Intelligence, MI5, and the Royal Ulster Constabulary during the long first decade of the most recent Troubles. Drawing on the evidence given to Public Inquiries, including that of the Bloody Sunday Inquiry, as well as other sources, this meticulously referenced work is essential to anyone trying to understand the military strategy of the British Army in Northern Ireland. As well as this, he reader will gain an insight into traditional intelligence techniques, as well as the early years of modern, technology-enabled intelligence operations. All agencies that worked in the theatre are covered, as well as certain operations detailed. Meticulously academically referenced, and derived fully from open sources, as listed in an very extensive bibliography, this is the book to read for legitimate information on modern intelligence and counter-terrorism.