I'm not sure I really agree with the link, ellie.
//For example, if it was objectively true that lying is always immoral, and telling the truth is always moral, then all the people who sought to hide Jews from the Germans during WWII acted immorally whenever they lied to German authorities as to the whereabouts of any Jews the Germans sought. Clearly, however, we would understand it to have been immoral for people to give up the locations of Jewish families in hiding if those people were, in fact, trying to hide and protect those Jewish families. So it cannot be true that it is objectively immoral to lie.//
That is a subjective view in itself, and also assumes German soldiers were behaving morally.