No Flak At All

When I was a child my Father used to sing to me a song that was popular with R.A.F. aircrews. I can only remember the refrain, can anyone help with the rest of it. The refrain goes…………

No Flak, No Flak At All,

Plenty Of Searchlights But No Flak At All.

I’ve remembered something else. It is sung to the tune of a rude song that I recall from my misguided youth. Excuse the language etc. but here it is.

No balls at all. No balls at all.
She married a man who had no balls at all.