If your love for the victims of violence stops short of ever being willing to use force to protect them, then your love is more conditional than you're letting on, IMO.
You are right and since you, unlike I, are in this world, I am afraid it is indeed your 'duty' to apply what you said above in your life. I mean; you, like many others, have to follow the natural human instincts of survival so that the world can go on properly.
In fact, the ordinary people in
all conflicting sides who joined wars just do what you said.
But, on my side, protecting human living fleshes by destroying/killing the living fleshes of some others lets me be just another executioner, if not a hero anytime my crimes serve a certain ruling system.
For instance, you remind me when I was young and serving the military service for a couple of years (as an officer for being an engineer). I was asked once to join a gun training session. There, I told them that I personally don't need learning how to use a gun because I have no reason, at all, to using it in any situation I may face.
They: But this is not just for you. Your country may be attacked by certain enemies anytime and we all have to be ready to stop them.
Me: Please, what do you mean by enemies?
They: They are the ones who will invade our land to impose their will on all of us.
Me: Do you mean they will do it as you try doing it with me now?
They laughed and I wasn't asked again to join such a training session. (I did the service as an assistant teacher in electronics).