But the web is crawling with lyrics of songs far more recent than this one.

In case any one is worrying, I don't think there's ever been a serious suggestion that posting a lyric in a thread constitutes a breach of copyright.

It can't be on a website anyway it seems. But someone must have the words in some other format, like in their memory. Or they've an auntie who has.

With a title like that I'm wondering if it's got any kind of war reference. Probably not, or it would have passed into wider circulation in the oral tradition, like Roses are blooming in Picardy (and I know that didn't have a war significance when it was written, but it owes it's survival to picking up one; and of course to being a good song.)