Re: officers are called 'sir'
Actually, it is quite frequent, when you are shopping, and a store worker addresses you to call you sir or ma'am because they have no way of knowing your name.
To call someone merely "Mister", without a Sir Name to go along with it (IE: Mr. Smith) . . .
I assume you mean "surname," sir! (Or Ma'am, as the case may be.)
“All the universe or nothingness. Which shall it be, Passworthy? Which shall it be?”