When defining terms regarding an ethics discussion, we must allow for the fact that we may reach a working compromise, but that not everyone will be happy or pleased with the definitions or conclusions. They are like traffic laws. Laws, like ethics, are used to gain protection - if you disobey, you forego the protection. All these definitions are really irrelevant, because all our definitions are based on personal world views. Long ago it was thought the world was flat, and traders and sailors traveled along coastlines rather than taking the best, direct routes.
Some beliefs actually function as fact and govern our values.
In any ethical discussion, this must be kept in mind. We must define the difference between the three, and for this discussion we will stipulate those differences. Ethics - these are the collective values and morals of a group, a society, or organization. So we don't always know from which of these three areas someone is operating, or from which we are operating. For those of you who have to help in the character development of young Marines, this ignorance and lack of reflection can make your efforts just a little tougher.