Did you read my mind for the plot of my story? I have a very similar scenario in mind gnawing at it for days, even if the military force my char is from is not the Order it's pretty close.
Here's my response anyways: A semi sneak peak that still works for your situation
As I raised my Energized Blade ready to strike the small form standing in front of me, I noticed It was a child. Despite the one it protected laying on the floor being the source of the similar energy my enemy possess I stopped, ashamed of my actions. Is this really myself? I don't recognize myself anymore... If this is what I've become, then prehaps I am not worthy to be called a Hero nor a Human no matter which Humanity is I originally belong to...
'I am a proud soldier, not a child murderer...' I think as I sheathe my sword picking the child from the ground, carefully wiping her face from the dirt she was laying into. Just then we are surrounded by Order soldiers.
"You, hand over that thing you're holding!" a man yells towards me.
"What? You want my sword?! Well, you can't have it, it is custom made." I played dumb.
"Don't fuck with us! Either hand over the monster or die with it!" another bellowed.
"Why don't you come over here and take her yourself." I coldly replied, assessing the opposition with squinted eyes. I found myself here by a mistake, but damn if I'll let them lay a finger on this kids.
I handed the small girl to the boy that was protecting her from me, "Take her and hide there." I motioned towards my makeshift basecamp behind my back.
I looked at the soldiers surrounding our position. I could feel their determination, but also their hopelesness and despair. They must be pinned as we were back then. Still, a death of a child won't bring salvation nor it will help any side in this conflict. That's why I drew my riot control expander batton instead of my blade...
Here you go... chose your end as you like.