JimmyC: This seems to be the song you quoted.

Copied from http://www.scopestrial.nl/CD/Teksten.htm#Crossmaglen
(It seems to be the website of a Dutch band named De Yoghurts. They credit this song to "People of No Property." I corrected a few obvious errors, but since I don't know the song, I left a few things intact that seem doubtful.)

CROSSMAGLEN

As I came down from Newry town, a band of young [men I] saw.
It was the first battalion of the men from South Armagh.
"Have you crossed the border, men, and did you travel far?
Did you see the soldiers on the road? Were they in the armoured cars?"

"I have crossed the border, men, and I did travel far.
I saw the soldiers on the road. They were in the armoured cars."
"If it's true," our leader said, "we either stick or stand."
McVerry gave the orders with a Thompson in his hand.

This band of freedom fighters, they numbered barely ten.
They feared neither god nor devil. They came from Crossmaglen.
The soldiers' car came along the road and into view at last.
A young man pulled the plunger out. There was a mighty blast.

We opened up along the stretch with every gun we had,
And before the ambush finished, oh, we knew we'd hit them bad.
When politicians raise their hand in act of parrots say, (?)
They let us rot for fifty years. It was the only way.