1 / Before the march - CND 1960s

O daughter, O daughter now listen to me
Just don't you go marching with the young CND
They'll Rock you and Roll you right out of the door
And if you come back you'll be a maiden no more.

2 / After the march

O mother and father now do not distress, 
This boy he has left me his name and address,
And if there's a baby as there surely could be,
It can come on the marches with his daddy and me.

So, slightly different verses to those above, and there were more of them that unfortunately I completely forget.