Why do people keep thinking that?
People keep saying that because it’s commonly understood to be a core part of the Nuremberg trials. (Claude output as an example below.)
Maybe this is a cultural difference, as I can imagine that in Germany the primary talking point about the Nuremberg trials is only that it didn’t go far enough … But the key parts of calling for “Nuremberg trials” I think are that
they charge defendants with capital crimes
they target leaders like politicians, business executives, etc
they retroactively introduce new crimes
they reject the so-called “Nuremberg defense” that defendants were following orders
Assuming you’re talking about soldiers killing active enemy combatants, then that is not murder. In general, soldiers killing active enemy combatants isn’t murder as it is permitted under the customary laws of war, and murder isn’t part of their jobs.