British forces were involved in a low-level civil war in Malaya in the 1950's, but it was referred to as an "Emergency" rather than a war, apparently this was partly due to the fact that if it were regarded as a war it would've severely affected the insurance premiums of rubber plantations.
The Falklands was referred to as a conflict, not a war, I think because there was no declaration of war. It's semantics.
This is what I'm getting at, I didn't need a history lesson about Ireland.