So we have a standard soldier that's not very high on the chain of command. He gets a bit of a shocking order from on high that realistically he has to follow. But suddenly, everyone around him forgets that they're trained combat specialists and not the fucking pacifist league, and they all start going crazy over how "immoral" this order is.

But they are soldiers, for gods sale. These people are trained killers, and why have the skills if you don't want to use them? so, logically the soldier follows the order. Then, sometime later comes the anti-establishment self-aggrandizing "hero" who moralizes to you about what you did was "wrong". 

So our soldier replies he was just following his orders. Somehow, this is seen as a BAD thing. He is told by our "hero" that the soldiers moral compass should've kicked in and disobeyed his superiors.

Then what the fuck is the point of a chain of command then? why bother answering to anyone in a military when you can disobey orders when it suits you? this is where a lot of fiction loses me, but mystifyingly enough, most people AGREE with this sentiment, that somehow disobeying a direct order from your superiors makes you a shining paragon of goodness, and NOT an insubordinate, unreliable person that disregards the ideals of others to force an overly idealistic mindset onto people actually using their brains and considering the long-term consequences of their actions.

Why do you guys think fiction approves of this self-righteous gung-ho crap, and constantly bashes the concept of a reliable authority figure?