Which action is NOT a duty prescribed by the orders of the sentry?

The action that is NOT a duty prescribed by the orders of the sentry is maintaining a daily log. Sentries are primarily responsible for tasks directly related to their post and the security of the area they are guarding. These duties typically include walking the post in a military manner, ensuring they are vigilant and observant, reporting any violations of the orders or unusual activities, and saluting officers and standards as a show of respect and adherence to military protocol.

While maintaining a daily log might be relevant in some contexts for record-keeping or communication, it is not a fundamental responsibility of a sentry as outlined in traditional sentry orders. The focus of a sentry's role is to actively secure and monitor their designated area rather than engage in administrative tasks like logging events. This distinction is critical for understanding the primary responsibilities expected of a sentry in a military setting.