So basically all the Catholics they were happy someone was fighting off the oppression from the Protestant RUC and mostly Protestant army (but Irish fought in the British army unconscripted for years or in lieu of a crime for example, loads of them that were poor same as Yorkshire and most other places wanted to see a bit of the world, do a bit of scrapping and their was no Irish Army so off to fight France, Germany in both world wars then fast forward, the odd one still would have joined,
Anyway, the majority of Catholics wanted a disciplined, training paramilitary force to fight their cause against the enemy.
When one night though they shot a teenage Catholic soldier who was a popular lad and the people pulled them and the IRA released a statement about their aim being a Marxist Republic Uniting North and South and they would not discriminate who they shot in the way of the cause.
So their was a split, the splinter group became the Provisional IRA, probably, begrudgingly, the best terrorist organisation Western Europe has ever seen, you could look at ETA but when you've big fuckin rural bits of the Basque territory to rock about in, it's a lot harder on streets that would resemble a large Dnglish Counterpart with Secret Intelligence, a fast growing and better and better armed police and army service on the streets and when necessary conducting huge raids with top troops and hundreds of police, as well as informants that had been flipped to contend with.
The left wing officials still hung about in the background but in the end even the INLA were bigger
Well I suppose that's the knighthood fucked.