With the progress of machine learning, facial recognition, algorithms etc, you'll likely see a point where machines are actually able to make these choices better than a person, they certainly don't feel pressure and make hasty decisions based on their own survival.
Certainly lots to think about on this subject! But as someone who has spent a lot of time in warzones as well, humans can make some pretty bad decisions alone sometime.
RE: Kalashnikov now making killer robots