Emma, did you see the telescopes? The telescopic sights? The shooter and his spotter can BOTH see the human beings they shoot. They are NOT targets in some arcade game.

Snipers are taught NEVER to look at a target's eyes or they won't be able to pull the trigger.

In every single war, whether is is fought with missiles and lasers or rocks, you MUST depersonalize the people you are trying to kills. We even have names for them: Boche, Hun, Wop, Eye-tie, Reds, Commies, Limeys, Gooks, Japs, Nips, Chinks, Lobsterbacks, Fuzzy-Wuzzies, Chalie, Niggers (by Brits, Americans, and others), Papist, Fenians.... Try killing someone you've been introduced to as Herman, Frederich, Giano, Lucio, Ivan, Fedor, Bill, Nguyen, Kim, Yamamoto, Suenaga, Chou, Fred, Offung, Sean, Patel, Patrick....

Had he and I but met
By some old ancient inn,
We should have set us down to wet
Right many a nipperkin!

But ranged as infantry,
And staring face to face,
I shot at him as he at me,
And killed him in his place.

I shot him dead because--
Because he was my foe,
Just so: my foe of course he was;
That's clear enough; although

He thought he'd 'list, perhaps,
Off-hand like--just as I--
Was out of work--had sold his traps--
No other reason why.

Yes; quaint and curious war is!
You shoot a fellow down
You'd treat, if met where any bar is,
Or help to half a crown.

The Man he Killed
       --Thomas Hardy