Military rules of engagement and the laws of war provide guidelines for proper conduct during armed conflicts. They aim to balance military necessity with humanitarian concerns by placing restrictions on permissible targets and weapons. Following such rules and laws helps prevent unnecessary suffering and maintains civilized standards, even in the heat of battle. However, enforcing the laws of war can be challenging, and interpretations may differ between nations and over time. Overall, some framework of limitations is important to regulate the use of violence and treatment of non-combatants during periods of conflict between states or factions.