What is the primary responsibility of the first order to the sentry?

The primary responsibility of the first order to the sentry is to take charge of this post and all government property in view. This directive emphasizes the sentry's role as the guardian of their assigned area and the associated assets. It highlights the importance of situational awareness and accountability for the safety and security of both the post and any government equipment or property in that vicinity. The sentry is expected to maintain vigilance over their post and ensure that all activities within their jurisdiction are monitored, thereby serving as the first line of defense in safeguarding against potential threats.

While observing everything that takes place around the sentry is critical, it is a component of their duty rather than the primary responsibility itself. Similarly, while it is important for the sentry to operate within the protocols of communication and to raise alarms in emergencies, these actions fall under the broader umbrella of taking charge of the post and protecting government property.