August is a summery month in England. In 1940, though, it was not, as the Battle of Britain raged in the sky above. It's true that the morality of men and nations change at the time of war. What might ordinarily have been shocking, a man and a woman, unmarried, having sex, was ok if the man was in the forces. One never knew when one would die.
There was no doubt by now, Hilda and I were feminine, in all ways, bar one. My breasts were developing nicely, while not as ponderous as Hilda's, which seemed to be stretching to a 40C bra, my 34B was miniature compared to them, but adequate for me. You might say I was a busty blond.