According to the 10th General Order, what must the sentry do regarding officers and colors?

The correct answer emphasizes the duty of the sentry to show respect and proper military protocol by saluting all officers and colors that are not cased. This is an important aspect of military discipline and reflects the honor afforded to those in authority and to the national colors. Saluting is a fundamental gesture that signifies respect and recognition of rank and allegiance to the flag, which embodies the values and unity of the service.

Understanding the significance of this duty highlights the importance of adherence to military customs and the role of a sentry in maintaining order and discipline. It reinforces the idea that respect is integral to military life, ensuring that personnel acknowledge the rank of their superiors and the symbolism of their national colors during their watch.

The other options, while they are indeed important duties for a sentry, do not directly relate to the specific obligations outlined in the 10th General Order. The focus here is on saluting, making it clear that recognition of officers and colors is a pivotal part of a sentry's responsibilities.