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.
Provisional IRA Belfast Brigade The Belfast Brigade of the Provisional IRA was the largest of the organisation's command areas, based in the city of Belfast. Founded in 1969, along with the formation of the Provisional IRA, it was historically organised into three battalions; the First Battalion based in the Andersonstown/Lenadoon/Twinbrook area of Southwest Belfast; the Second Battalion based in the Falls Road/Clonard/Ballymurphy district of West Belfast; and the Third Battalion organised in nationalist enclaves in the north (Ardoyne, New Lodge, Ligoniel), south (the Markets, Lower Ormeau) and east (Short Strand) of the city.