To whom should a sentry salute according to General Orders?

A sentry is required to salute all officers and colors that are not cased as part of their duties, adhering to the general customs and courtesies expected in the military. This practice reinforces respect for rank and honors the flag, which represents the nation and the military service. By saluting officers, sentries are acknowledging the authority and leadership they represent, and saluting uncovered colors signifies respect for the nation’s symbol that stands for freedom and sacrifice.

Saluting is a fundamental aspect of military discipline and tradition, reinforcing the hierarchy within the military structure. It conveys professionalism, respect, and a commitment to the values of the service. In contrast, other choices do not encompass the complete requirements of military protocol; they either limit the scope of who should be saluted or incorrectly suggest that saluting is only necessary during special occasions.