"Lastly, forget good sportsmanship on the field of battle. War is not a refereed football game but the dirtiest game yet devised by human minds. And, if for one moment you feel soft towards that Nazi shooting at you, remember he's trying to kill you and, if he had the chance, he'd drive your dad into slavery, cut your mother's throat, rape your wife, sister, sweetheart, or daughter. You'll get no quarter from him. Give him none!"