The episode title translates to English as "For Queen and Country."
The aircraft shown being flown by Langford taking Steve and Danny to Europe is a Cessna Citation II S550, registration N442KM, built in 1985. Its specified maximum range is 2,300 miles, less than the distance between Honolulu and San Francisco. A total of 160 S550s were built.
The George Cross that Steve, Danny, and Harry receive is the second highest honor given to a British citizen.
First appearance by Chris Vance as "Harry Langford".