There is a great difference between getting shot at and the slaughter of innocents. Your previous posting definitely gives the impression that you have equated the two. And, again, using the German atrocities as an example for this period is both inaccurate and intellectually dishonest. It is an error in logic as well as being a logical fallacy. You might wish to read Historians' Fallacies by David Hackett Fischer for a thorough examination of the topic.
And the execution of the parole violators in Jaffa was justified during the period. And it was not Napoleon's stated or practiced policy to murder innocents at any time. But he also understood that it did happen, just as it still happens in warfare today, unfortunately.
And if you have not been in combat and/or commanded troops at any time trying to explain those two phenomena to someone without the experience is akin to attempting to explain the concept of color to a person blind from birth.