Privates and others should always address noncommissioned officers by their titles. For example, "Sergeant Smith," "Corporal Jones," etc., and not "Smith," "Jones," etc.
When asked his name, a soldier should answer, for instance, "Private Jones, Sir."
When given an order or instructions of any kind by an officer, or noncommissioned officer, a soldier should always say, "Yes, sir," thus letting the officer or noncommissioned officer know that the soldier understands the order or instructions. Don't say, "Very well, sir," or "All right, sir"; say, "Yes, sir," it's the direct, military way of answering.
Short direct answers should be made in the form of, "No, sir," "Yes, sir," "I don't know, sir," "I will try, sir," etc.
Do not use slang in speaking to an officer.
Never interrupt an officer while he is speaking. Always wait until he is through talking before you begin to speak.
After a soldier has finished a thing that he was ordered to do, he should always report to the officer who gave him the order. For example, "The captain's message to Lieutenant Smith has been delivered."
If ordered to report to an officer for any purpose, do not go away without first ascertaining if the officer is through with you, as it often happens he has something else he would like to have you do. After having finished the work given in the beginning, report, for instance, "Sir, is the captain through with me?"
When an officer calls a soldier who is some distance away, the soldier should immediately salute, and say, "Yes, sir," and, if necessary, approach the officer with a quickened step. If the officer is waiting on the soldier, the latter should take up the double time.
Always salute an officer when he leaves you after a conversation or at any other time. And always salute just as soon as the officer makes the first move to leave. Don't wait until he has moved away several feet before saluting.