Which order emphasizes that the sentry must report to higher authority?

The 3rd Order to the Sentry is the one that emphasizes the importance of reporting to higher authority. This order states that a sentry must report any incident or unusual activity to the next higher authority. This is crucial for maintaining effective communication within a security or military structure, as it ensures that potential threats or irregularities can be addressed promptly by someone with the appropriate level of authority. By encouraging sentries to keep their superiors informed, the 3rd Order helps maintain chain of command and operational integrity. This order is foundational in establishing procedures that contribute to the overall security of the post or area being guarded.