Which statement best reflects how to address a commissioned officer when rank is known?

• A. By first name only.
• B. By rank (for example, Captain) or 'Sir/Ma'am' when appropriate.
• C. By nickname only.
• D. By last name with no title.

Answer: (B)

When you know the rank of a commissioned officer, you address them by that rank or with Sir/Ma'am as a formal sign of respect. Using the officer’s rank directly acknowledges their position and maintains proper military decorum, which is essential in all professional interactions. For example, saying “Captain” or “Sir” shows you recognize their authority and treat the encounter with the appropriate level of formality. This is preferable to using a first name or nickname, which can come off as informal or disrespectful in official settings. Addressing someone by their last name with no title also fails to acknowledge their rank and authority, which isn’t appropriate when meeting a commissioned officer. The rank form or Sir/Ma'am consistently conveys respect and proper protocol.