According to the Fourth General Order, what should a sentry do?

The Fourth General Order focuses on the responsibilities of a sentry in relation to communication and maintaining order. The correct response indicates the sentry's duty to repeat all calls from posts that are more distant from the guardhouse than their own. This ensures that important communications are relayed effectively, maintaining awareness and coordination among personnel, particularly in situations where distance could hinder communication. This responsibility is crucial in a military setting, where maintaining the chain of command and ensuring that all relevant information is properly disseminated is essential to operational security and effectiveness.

Each of the other options describes significant duties and behaviors expected of a sentry, but they do not pertain specifically to the Fourth General Order. For example, walking in a military manner emphasizes discipline and an orderly presence, while taking charge of the post highlights accountability for security. Talking only in the line of duty emphasizes professionalism and the importance of remaining alert. These elements are all critical aspects of a sentry’s role, but they are distinct from the specific directive of repeating calls from more distant posts, which is key to ensuring proper communication on any given shift.