What should a sentry do if someone approaches their post, as per General Order 11?

The appropriate action for a sentry when someone approaches their post, according to General Order 11, is to challenge them without hesitation. This directive emphasizes the role of a sentry in maintaining security and vigilance. A sentry is responsible for ensuring that only authorized individuals are allowed access to their designated area. By challenging anyone who approaches, the sentry can assess whether the person poses a threat or has proper authorization to be in that location.

This action is crucial for maintaining the safety and integrity of military operations, as it helps prevent unauthorized individuals from entering sensitive areas, which could compromise security. It is essential for sentries to remain alert and proactive in their duties, thereby reinforcing the importance of discipline and responsibility in the military.