One of the first references to the "laws of war", or "traditions of war" was by Cicero, who urged soldiers to observe the rules of war, since obeying the regulations separated the "men" from the "brutes".
西塞罗是最早有记录提出“战争法”或“战争传统”的人之一，他督促士兵遵守战争规则，因为遵守规则使”人“和”野兽“区别开来。