What action is mandated by the Third General Order of a Sentry?

The Third General Order of a Sentry specifically mandates that a sentry must report all violations of orders that they are instructed to enforce. This is crucial for maintaining discipline and order within a military setting. A sentry plays a vital role in ensuring that rules and regulations are upheld, and part of this responsibility involves actively observing and reporting any breaches of protocol or unauthorized actions.

By recognizing violations and reporting them, the sentry contributes to the overall security and effectiveness of the unit. This duty underscores the importance of vigilance and accountability in a military environment, ensuring that all personnel adhere to prescribed guidelines and orders.

The other options, while related to sentry duties, do not capture the specific responsibility outlined in the Third General Order. Maintaining quiet, monitoring movements, or keeping open lines of communication are important aspects of security but do not reflect the essence of reporting violations as mandated by the order.