What is required of a guard when encountering officers as indicated by General Order 10?

The correct answer emphasizes the importance of military customs and courtesies, specifically the requirement for guards to salute all officers and colors that are not cased. This protocol reinforces respect for rank and position within the military hierarchy, underscoring the value placed on discipline and the traditions of the service.

Saluting is a formal recognition of an officer's authority and role, and this gesture is a fundamental part of military etiquette. By saluting all officers regardless of the situation—unless directed otherwise—guards convey respect and acknowledge the chain of command, which is essential for maintaining order in military environments.

The specific mention of "colors not cased" refers to the flag that represents the unit or organization, which should also receive the same respect and formality as officers. Together, these practices contribute to a cohesive and respectful military culture.