A pre-D-Day address passed down through Alex Clarke's family has a Royal Marines sergeant major warning commandos against revenge. Its exact wording is uncertain because it survives as family tradition. The message is that professional soldiers must follow the law even when the enemy has abandoned it. Restraint preserves the unit's identity and prevents anger from eroding discipline.
Notable Point · 2:36:27-2:38:14
Professional discipline rejects battlefield revenge
A recollected pre-D-Day warning links lawful treatment of German prisoners to Royal Marines professionalism and discipline.