Here is my interpretation of the song, checked out against a local map as well. Sorry if the formatting is all wrong but there you go!

I have always steered clear of singing it because it has such a localised content which means much to the good people of Halifax yet little to those in foreign parts (like Leeds?)

THE BATTLE OF SOWERBY BRIDGE

The Battle of Sowerby Bridge were fought on the forty-fourth of March.
The King’s Cross Fusiliers turned out. They marched as stiff as starch.
They marched as far as Bolton Brow and the enemy hove in sight,
And they called us generals nasty names and they challenged us to fight.

CHORUS: We were amongst them. We were amongst them.
We stitched and we slashed and we slaughtered and we slew
‘Till the air for miles around were blue.
For an hour and a quarter, we held the foe at bay.
There were only two were left that day, and we were amongst them.

At break of day, down Copley way, we went to fight the foe.
Our good scout Billy Higgins come to tell the tale of woe.
He said the enemy had advanced, so we retired pell-mell.
They shouted to surrender but we shouted, “Go to hell.”

The enemy then retired into the wilds of Shibden Glen.
The switchback were invaded by an hundred thousand men.
They hung their wounded out to dry across the aerial flight,
And they stuffed their guts wi’ monkey-nuts and challenged us to fight.

We chased the enemy round the town till their stockings all fell down,
From Cavering Slacks to Boulder Clough and to Norland Town.
We came across a public house and there we raised a cheer,
For in that cellar we did find an hundred casks of beer.

FINAL CHORUS: We were amongst them. we were amongst them.
We supped and we drank and we drained and we drew
‘Till the air for miles around were phew!
For an hour and a quarter, we put that beer away.
There were only two were carried on that day, and we were amongst them.