Since I have never been to war, much less rifle warfare from house to house, I cannot judge how quickly I would pull a trigger when it was a "me or you" split second decision.
I know my father was on cleanup details in the South Sea islands during the waning days of WW II and was faced with going from cave to cave to root out soldiers who did not know the war was over, and were ready to die for their emperor. It was not pretty, there were no cameras, and he did not speak of it much.
Change "cave" to "house" and "soldier" to "insurgent" and "emperor" to "Allah"....
Unless you have walked that path, you cannot judge anything.