However sniper's are human, and as said there is an almost small but undeniable fact that they will refuse to take the shot.
True, but keep in mind humans are also flawed, and the killing may be unevitable.
Also I am familiar with what Churchill said; but when has killing in a war ever been truly needed? Sometimes people kill just to get a problem in front of the UN so that they can fix it. Many times simply threatening by having a place occupied can severely limit the number of casualties without actually killing anyone. For war, I am speaking of both countries involved.
But once again, humans are flawed, and let personal greedy desires disrupt the common good of mankind. Wars are always going to exist. Until all issues have been resolved and everyone has learned to co-operate, this will always be an issue.
Did the first really have to kill to get a point across? Or kill at all for any reason? No. Yet "the sad truth is that they do" is not entirely a direct argument. Yes, they do. But is it right? Most people would answer no I feel to that. Was it their first option? Doubtful. Did they do it anyways? Yes. Hence getting to the problem at hand.
So, let us say an army barges into your country and occupies it. Even though they didn't kill, they are ****** your women, pillaging your land, and oppressing your people. Are you going to stand there?
No. Although this is a tad irrelevant, sometimes power and money changes a person. Sometimes... they need to be stopped. Also keep in mind different cultures may have varying differences in what they deem "right" and "wrong". What if they inertly believe you're inferior because of a social or religious factor? This will cause problems, and someone needs to stop it from consuming the entire nation.
So, are you going to kill 80 soldiers, or attempt to be peaceful when they arrived to destroy and wipe you out of existance, and they then murder 80,000 of your people systematically?
The sad thing is, soldiers usually only obey commands, and may or may not feel the same way about a particular issue, but they have no choice, or they don't know better. Often, fear and anger make people commit irrational decisions. Was it needed? No. But are people fighting for their lives going to cooly sit down with their enemies and discuss this over a session of crumpets and tea? No. I wish people never did these atrocious actions, there's always going to be unfortunate occurances when someone is murdered by a radical individual out on a kamikaze mission.
The inability to exercise other options in a manner that works without killing.
It may or may not be necessary. Sometimes, attackers need to be stopped, and most of these suicide bombers, soldiers, go out knowing they're not coming back. So, they either die and complete the mission, or they die in vain. But the only difference now is that an innocent civilian died because you were too much of a wuss to pull the trigger, even though you were instructed to do so.
Yes, it should be a last measure. But sometimes, it must be done.