During WW II a young Major was sent to inspect a Home Guard (Dad's Army) unit. In the front rank there was an elderly Corporal, wearing three rows of medals, and with uniform and boots that would have passed muster in the Brigade of Guards. The conversation went:
"Splendid turnout Corporal, most commendable."
"Thank you sir."
You have obviously seen some action, which service were you in?"
"The Royal Navy, sir."
"Splendid! And what rank did you achieve?"
"Rear Admiral, Sir."
Ouch!