I first heard it as a kid on one of my older brothers rugby songs record albums...
A Sol, a sol, a soldier went to war.
To pis, to pis, two pistols in his hands.
A cunt, a cunt, a country to defend.
For King, for king, For kingdom and the land.
A whore, a whore, a horse between his legs...
Is about all I remember of it nowadays and the tune.