Seems as if some people believe the song is related to The Star of the County Down. Someone supplied the lyrics to that song in a "The Session" thread (click) which I will quote below:

Here it is known as a nice driving fiddle/bar tune under the name of "Star of the County Down", played as a waltz. It has a beautiful quality as a waltz and works great on the low-d whistle too.

Here’s my (untested) ABC for it, including guitar chords. This version may be sung too(lyrics below):

EG | "Am" A4 AB | "F" A3 G A2 | "C" c3 d ec | "G" d4 cd | "Am" e3 d c2 |1 "Am" A3 G E2 | "G" G6 | "Em" G4 cB :|2 "G" A4 G2 | "Am" A6-|-A4 e2 | "C" g4 e2 | e3 d c2 | "G" d4 e2 | "Em" d4 cd | "Am" e3 d c2 | A3 G E2 | "Em" G6-|-G2 c2 B2 | "Am" A4 AB | "F" A3 G A2 | "C" c3 d ec | "G" d4 cd | "Am" e3 c d2 | "G" A4 G2 | "Am" A6 | A6

Here are the lyrics:
In Banbridge Town in the County Down
One morning last July,
From a boreen green came a sweet colleen
And she smiled as she passed me by.
She looked so sweet fronn her two bare feet
To the sheen of her nut brown hair.
Such a coaxing elf, sure I shook myself
For to see I was really there.

Chorus:
From Bantry Bay up to Derry Quay and
From Galway to Dublin Town,
No maid I’ve seen like the brown colleen
That I met in the County Down.

As she onward sped, sure I scratched my head,
And I looked with a feelin’ rare,
And I say’s, say’s I, to a passer-by,
Whose the maid with the nut brown hair?
He smiled at me and he says’s, say’s he,
That’s the gem of Ireland’s crown.
It’s Rosie McCann from the banks of the Bann,
She’s the star of the County Down.

Chorus:
From Bantry Bay up to Derry Ouay and
From Galway to Dublin Town,
No maid I’ve seen like the brown colleen
That I met in the County Down.

At the Harvest Fair she’ll be surely there
And I’ll dress in my Sunday clothes,
With my shoes shone bright and my hat cocked
Right for a smile from my nut brown rose.
No pipe I’ll smoke, no horse I’ll yoke
Till my plough turns rust coloured brown.
Till a smiling bride, by my own fireside
Sits the star of the County Down.

Chorus / Repeat

# Posted by sifudave54 17 years ago.

A few online lyrics websites also have the following lyrics provided:

Bonaparte said "Men, Advance!
Bring glory back to France
And carry out my clever, bold design
For there's land and riches too
And it's waiting there for you
A thousand miles East across the Rhine"

THE SKY WAS ROYAL BLUE
AND THE TRICOLOR FLEW
WITH FIVE HUNDRED THOUSAND SOLDIERS MARCHING FINE
NOT A SINGLE DOUBT HAD HE
CONVINCED OF VICTORY
AS HE LEAD HIS MIGHTY LEGION 'CROSS THE RHINE

With his hand inside his vest
His Army surged in from the West
While the foe in Moscow calmly bided time
Instead of fight, they'd first retreat
For later French defeat
And draw them ever further 'cross the Rhine

CHORUS

His Grand Armee staggered from the East
With a host of men deceased
Scattered thru the snows that left them blind
And they cursed that cloudless day
When he lead them all astray
When he led them to their doom across the Rhine

CHORUS

source: https://www.lyricsondemand.com/soundtracks/f/freestateofjoneslyrics/napoleoncrossingtherhinelyrics.html