Unless there's records of them which have been made publicly available (such as prison records), you don't.
No-one knows. They are peaceful now.
Irish Republican Liberation Army was created in 2006.
Provisional Irish Republican Army was created in 1969.
Chronology of Continuity Irish Republican Army actions happened in 2000.
Irish and English
In the US, an Individual Retirement Account. In the UK, the Irish Republican Army, a former terrorist organisation.
british
Do you mean the IRA (Irish Republican Army)
It seems like the enemies of the Provisional Irish Republican Army would be the British. That's what the research that I did on this topic.
Assuming you are asking about Liam O'Flaherty's short story, the factions are the Irish Republican Army (the IRA), of which the main character is a member, and the Irish Free State.
You are referring to the Irish Republican Army or IRA and they are not still fighting.
1949