I don't get how people can kill others. I know this is probably a war but I personally wouldn't be able to pull the trigger on someone else's life.
Even if they were shooting at you?
Who am I to sentence them to death? If I had to I'd retaliate, but I wouldn't be out there, knowing that the person could have a family, kids that are waiting for him, and think about it, imagine if you were a US soldier, this was your last week, your entire family was coming to get a party together to celebrate your homecoming, everyone is happy, then you die. Imagine doing that to a family.
You're a US soldier, your family knows the risks of your job. Imagine you were drafted, you'd then be out there retaliating. The only reason you're not drafted is because of the people that volunteer to go. So instead of thinking them as people who sentence others to death you can thank them because you're still at home.
Man... I find this an overkill.

