That's what, brooklyn13, is saying. He's saying if you served in war in which any atrocity was committed by your side then you cannot protest
any war crime in the future by any country, without being a hypocrite. Does that make any rational sense in any world of reality? No it doesn't.
It was Plato who said, “He, O men, is the wisest, who like Socrates, knows that his wisdom is in truth worth nothing”