How should personnel address an officer when in formal settings?

In formal settings, addressing an officer by their rank and last name is the standard protocol. This practice reflects respect and adherence to military customs and courtesies. Using the rank establishes the officer's authority and position within the chain of command, which is essential for maintaining professionalism in military contexts.

For instance, if the officer's rank is Captain and their last name is Smith, a subordinate would refer to them as "Captain Smith." This approach acknowledges their rank and role while fostering an atmosphere of respect and discipline.

Other forms of address, such as using a first name, full name, or title, do not conform to the established military customs and might undermine the respected hierarchical structure of the organization. Thus, using the correct form of address not only shows respect but also maintains the decorum expected in formal military interactions.