His courtesy was somewhat extravagant.
He would write and thank people who wrote to thank him for wedding presents and when he encountered anyone as punctilious as himself the correspondence ended only with death.
We should invade their countries, kill their leaders and convert them to Christianity. We weren't punctilious about locating and punishing only Hitler and his top officers. We carpet-bombed German cities; we killed civilians. That's war. And this is war.