Suggestion:
Your compels for your HC suggests your Trouble.
Trouble: 'Couldn't Save Them All' or 'Can't Save Them All'
Compel: Whenever a sight, sound, or smell has him remember a soldier he failed to save.
Invoke: When trying to save someone's life, he mutters 'not again' and give it all his all.
Then change the compel for your HC to helping those who have been injured. Friend or foe, it doesn't matter - after a fight scene Dr. Holmes will patch them all up. Sure he'll normally start with a friend, but he follows triage rules that have him saving as many people as he can.
Spoiler for Ghost Story: a bit like Butters in Ghost Story.
But while the above makes sense to me, it might not be how you see the PC acting...
Richard