Two things...............
I have never used rank since I retired, but one of the first questions asked by non-military folk when they find out that I am ex-military is "What rank were you?"
When I respond with a "Why? - And what does it matter?" I am met with a strange look as if I am trying to hide something.
Point two........
I did a US Exchange tour and the Sqn Ldr I was replacing had a great line when visiting a USMC Base. Checking in to the BOQ, he would be questioned by a Marine who did not understand his rank........
It went something like this.....
What is your rank, Sir?.......
Squadron Leader.
Squadron Leader Sir........Sorry, Sir, don't understand that, Sir...........What rank would you be if you were in the Marine Corps, Sir............
Oh - I'd probably be a General by now if I was in the Marine Corps.
Yes Sir, General, Sir, let me get you a great room, Sir...........
etc etc
I never tried that line!!