C.E. Evans wrote:
I could see that being used in the same sense that "police officer" is used for a beat cop even if that person doesn't really have an officer rank. It works if we lose the idea that Starfleet is exactly like the U.S. Navy and more of its own thing.
That doesn't seem to be a great fit, as police forces don't generally have a commissioned/enlisted division,
It fits all right, but a police force's chain of command can vary from city to city.
In some cities:
Chief of Police (or Police Commissioner)
Other cities may include or substitute ranks with Sheriff, Commander, Inspector, Deputy, and more. Other cities have different placement of ranks, placing Detective higher in their chain of command than in others.