Which principle of LOAC prohibits the infliction of unnecessary suffering?

The principle of LOAC (Law of Armed Conflict) that prohibits the infliction of unnecessary suffering is indeed rooted in the concept of humanity. This principle emphasizes the need to treat all individuals involved in armed conflict with dignity and respect, while also limiting the methods and means of warfare to those that do not cause excessive or unnecessary harm.

The principle of humanity aims to balance military objectives with humanitarian considerations, ensuring that all parties in the conflict are protected from inhumane treatment. This includes prohibitions against weapons or tactics that would result in excessive suffering compared to the military advantage gained. By adhering to this principle, combatants are encouraged to conduct military operations in a way that minimizes unnecessary suffering and respects human dignity, highlighting the moral stipulations inherent in warfare.