I, the same as many others, did as I was told (ordered) without question or complaint. However, it is my considered opinion that had I and all the others NOT been there in NI in the time we were, then total mayhem (as Zulu said) on the streets would have resulted, and My role as far as I was concerned, was "peace keeper", not adversary to the Northern Irish people, who were for the most part lovely , kind, people, who I have visited a few times since and become good friends with. Yes, there were the exceptions, a few hard hearted, opinionated, ruthless people who only wanted to cause pain and suffering, but these were in the minority, and most were caught, or known about, or even thwarted in their attempts to kill or maim innocent people.
"Bloody Sunday" was wrong for a lot of reasons, but you really needed to be there to appreciate the futility and sometimes confusion of the armed forces, when the bullet with your name on it could arrive at any time from the most trusted of sources, or the most safe places, and you were told "you may not fire back unless your life is in direct risk, or you are given permission to do so by a superior officer".
The supposed "shoot to kill" policy was complete rubbish. Many times you were under fire and COULD not fire back, because you were not allowed to.
Sorry, maybe you shouldn't debate this argument so fully unless you had been there, it puts a real spin on your opinion then.
May I also state that this is only my opinion, and I am not trying to stop any other person having theirs, or criticising them for doing so.