A digger, serving overseas, was annoyed and upset when his
girlfriend sent him a "Dear John" letter, breaking off their
engagement and asking for her photograph back.

The digger went out and collected from his friends all the
unwanted photographs of women that he could find.
Then he bundled them all together and sent them back to the girl with a note saying:
"Regret cannot remember which one is you - please keep your photo and
return the others."