Owen Martin O'Hagan was a former member of an army which emerged in what year?
Official Irish Republican Army The Official Irish Republican Army or Official IRA (OIRA) was an Irish republican paramilitary group whose goal was to remove Northern Ireland from the United Kingdom and create a "workers' republic" encompassing all of Ireland. It emerged in December 1969, shortly after the beginning of the Troubles, when the Irish Republican Army split into two factions. The other was the Provisional IRA. Each continued to call itself simply "the IRA" and rejected the other's legitimacy. Unlike the "Provisionals", the "Officials" were Marxist and worked to form a united front with other Irish communist groups, named the Irish National Liberation Front (NLF). The Officials were called the NLF by the Provisionals and were sometimes nicknamed the "Red IRA" by others.
Army of the Republic of Serb Krajina The Serbian Army of Krajina (Serbian: Српска војска Крајине/Srpska vojska Krajine , ), also known in English as the Army of the Republic of Serb(ian) Krajina, was the armed forces of the Republic of Serbian Krajina (RSK), a Serb breakaway state in Croatia during the Croatian War (1991–95). The army was officially established on 19 March 1992. The RSK covered an area of some 17,028 km² at its peak, and was located entirely inland and thus had no navy. The military, along with the self-proclaimed Republic of Serbian Krajina, dissolved in 1995 following the Croatian Operation Storm.