The Beaufighter was one of the undersung successes of British military aviation in the Second World War. May have lacked the glamour of the Spitfire or Mosquito, but was a superbly tough and powerful night fighter/fighter-bomber which proved adaptable to many different roles and did invaluable service in widely differing theatres, including the Pacific (the Japanese called it ‘whispering death’).
I had to look it up despite being a avid boyhood fan of WWII aviation. They were still flying in the DC area of my early childhood.
Despite being called the "whispering death" the two big radials must still have been something to hear, echoing off the building walls at the second floor level. (That's US count, UK and continental I guess is first floor.)
So the article - probably wrong. More likely the observer/radio operator was the one who dropped the flag, while the officer took the credit.