Re: Why can't Ro wear her Bajoran earring?
^ Like I said, it's an oft-used shorthand to refer to someone who is a Lieutenant Colonel as just "Colonel."
And we do know that the Bajoran military has that rank. Colonel Day (Steven Weber's character from that 3-parter) was one.
"Those who beat their swords into plowshares, will plow for those who did not." - Thomas Jefferson