This question is 100% a provocation. Trump got democratically elected and thousand of soldiers carried out his orders while they could have refused. Now that USA government has made his own “military special operation” are we going to be racist with americans and treat them like russians? Calling them orcs or implying the population is all shit?
“Life-ending consequences” doesn’t necessarily mean literal death. Court martials for serious offenses (which disobeying orders absolutely is) can come with very heavy penalties. It’s possible that it’s a regional colloquialism, but ‘life-ending consequences’ refers to consequences that end “life as you know it”, typically referring to something that is reasonably impossible to recover from.
Ok yes, then I agree. But deciding to stop a mass murderer has often a possible life ending consequence and I think most agree that it would still be the right way to act.