This is the song called Ballyneety's Walls. Based on the same event as The Night I Rode With Sarsfield's Men.

BALLYNEETY'S WALLS

The night was dark 'round Limerick and everything was still.
It was for the foe in ambush we lay beside the hill.
Like lions bold we waited to dash upon our prey
As we rode with Sarsfield at our head at the dawning of the day.

From Dublin came the foemen with guns and warlike store.
To take the town of Limerick they wanted ten times o'er.
But little was their dreaming that we would be their doom
As we rode with Sarsfield at our head right down from Wild Slieve Bloom.

At the lonely hour of midnight, each man leaped on his steed,
And through the town of Cullen we dashed with lightning speed.
And o'er the hills we thundered to Ballyneety's walls
Where lay the foe securely with guns and arms and all.

They asked us for our password and Sarsfield was the man.
"Oh, here I am," our general cried as down on them we ran.
Oh, had we bridged the Ferment the moon and stars gave light,
And for the battle of the Boyne we had revenge that night.

Loud laughed our gallant general as fast we rode away,
And many's the health we drank to him in Limerick town next day.
Here's another health to Sarsfield who led us one and all.
We blew up the Royal Artillery at Ballyneety's walls.