 G2 spent much of its early efforts combating the Anti-Treaty IRA, in the Republic of Ireland, and also operated in Northern Ireland.G2 first came to public attention during World War II (1939-1945), known in Ireland as "The Emergency".Although Ireland had a policy of military neutrality and was "non-belligerent" during WWII, G2 formed secret agreements with the United Kingdom's Military Intelligence Section 5 (MI5) and the United States' Office of Strategic Services (OSS), the predecessor to the Central Intelligence Agency (CIA).