I think it's present, but not a dominant factor. Depends on culture and training. What Milgram measured was how inexperienced people react to a new ethical si

I think it's present, but not a dominant factor. Depends on culture and training. What Milgram measured was how inexperienced people react to a new ethical situation. If he had tested people who were familiar with the context--fellow scientists--I very much suspect the results would be different. That's true in many fields. You might be able to intimidate a junior engineer into including a substandard part in a safety-critical area, but a senior engineer will refuse. And then he'll quit. It's not that he has more character; he has more experience. Soldiers have a lot of experience. If you order them to hurt people immorally, their reactions are more like the senior engineer than the junior one: measures of character, not measures of how quickly they can think about a new situation. There have always been soldiers who said, at the eventual trial, that they were "just following orders". I think they're generally inexperienced, but I'm sure there are cowards who think that way at the end of a career, too. I'm sure the prevalence depends on culture and training, but that does show that the effect Milgram measured is present. I do have some evidence that it isn't dominant, though. Historically speaking, conquering armies have behaved in conquered countries pretty much as they pleased--sometimes very badly. But to get a soldier to kill his own countrymen, it has generally been necessary to threaten him or his family with death -- mere orders have not been enough. The soldier has a limit on what he'll do for authority, and he'll quit sooner than Milgram's subjects did. It takes courage to make a high stakes moral decision correctly; I won't claim that everyone has it. I don't know what the rate is, and I expect it varies widely by culture and training. But I do think that in order to measure it, you need to test professionals. Extrapolating from amateurs isn't good enough. Perhaps a repeat Milgram would be a start: test all the same subjects again a week later, after they've had plenty of time to think about the experience.