Sentry

Sentry 

an armed guard with the combat mission of protecting and defending an assigned post. According to the Regulations on Garrison and Guard Duty of the Armed Forces of the USSR, a sentry is inviolable, his rights and person specially protected by law. He is responsible only to the guard commander, the commander’s assistant, or the sergeant of the relief and must be obeyed unquestioningly. He has the right to use arms in circumstances defined in the regulations.

A sentry must guard his post vigilantly and defend it staunchly and is authorized to use weapons without warning in the event of a clear attack on him or his post. While on duty, a sentry is prohibited from leaving his post, from sleeping, sitting, talking, eating, drinking, or smoking, or from engaging in activities that would prevent him from carrying out his mission.