Among their number are those whom have experienced first hand the "contribution" of British troops at the behest of their government, Labour and Tory alike.
The same armed forces have spread their "contribution" to other societies such as Iraq, Libya and Afghanistan with horrendous results for the people targeted.
An Irish republican in a Facebook post which drew attention to the Unite stance commented:
I'm wondering what the Irish members think of this great union now, when you consider the atrocities that these same armed forces committed on the streets of Ireland?
As a trade union Unite has done many good things to protect workers from the worst effects of greed in both Ireland and the UK and will continue to do so.
But this lack of international solidarity is for many a step too far.
Can it be made right?
Is there a proportionate response which can avoid throwing out the baby with the bathwater?
Or should it be a red line point of principle for Irish trade unionists including those currently with Unite?
Have your say.