917. Officers and enlisted men passing the uncased color will render honors as follows: If in uniform, they will salute as required by subparagraph (5), paragraph 759; if in civilian dress and covered, they will uncover, holding the headdress opposite the left shoulder with the right hand; if uncovered, they will salute with the right-hand salute.
The national flag belonging to dismounted organizations is called a color; to mounted organizations, a standard. An uncased color is one that is not in its waterproof cover.
Privates do not salute noncommissioned officers. Prisoners are not permitted to salute; they merely come to attention if not actually at work. The playing of the National Anthem as a part of a medley is prohibited in the military service.
Section 8. Courtesies in conversation.
In speaking to an officer, always stand at attention and use the word "Sir." Examples:
"Sir, Private Brown, Company B, reports as orderly."
"Sir, the first sergeant directed me to report to the captain."
(Question by an officer:) "To what company do you belong?"
(Answer:) "Company H, sir."
(Question by an officer:) "Has first call for drill sounded?"