Ahierarchy of authority is most military organizations are known for having a strong hierarchy of authority.

A hierarchy of authority is a control mechanism for making sure the right people do the right things at the right time.
This is why a hierarchy of authority is so important, especially in the army and other military organizations. It has to be clearly stated who's in charge, and who's ordering others what they are supposed to do in order to ensure the success of the operation and avoid any failures.