What is the primary responsibility outlined in General Order 11?

The primary responsibility outlined in General Order 11 emphasizes the importance of vigilance during night duty. This order instructs personnel to be particularly watchful after sunset and to challenge any unauthorized individuals who may be attempting to access restricted areas. The rationale behind this order is grounded in the recognition that nighttime poses unique security challenges, making it imperative for service members to remain alert and proactive in safeguarding their posts.

By focusing on the need to challenge unauthorized persons, the order reinforces the fundamental principle of maintaining security and protecting both personnel and assets from potential threats. This vigilant approach is essential for effective military operations, as it helps deter possible intrusions and ensures a safe working environment during hours when visibility is limited. The other choices relate to important aspects of military duty but do not specifically encapsulate the unique focus of General Order 11.