Which principle allows the military to utilize any means necessary to defeat enemies unless prohibited by law?

The principle that allows the military to utilize any means necessary to defeat enemies unless prohibited by law is military necessity. This principle is rooted in the necessity of achieving legitimate military objectives while conducting operations. It underscores the idea that force must be used to achieve a definitive military advantage over an adversary, provided it complies with existing legal constraints and international humanitarian law.

Military necessity permits actions that may be otherwise prohibited by moral or humanitarian standards if such actions are essential for the successful completion of a military mission. This principle helps guide decision-making in the conduct of operations, ensuring that force is applied effectively and appropriately while maintaining a balance with legal and ethical obligations.

In contrast, the other principles mentioned focus on different aspects of military conduct. Honor emphasizes integrity and respect in military operations, humanity concerns the protection of non-combatants and humane treatment of all individuals during conflict, and distinction requires that military operations must differentiate between combatants and non-combatants to minimize collateral damage. These principles serve complementary roles within the framework of military ethics and law.