"Stop The Cavalry" is a song written and originally performed by the musician Jona Lewie.  The song was never intended as a Christmas hit, but the line 'Wish I was at home for Christmas' as well as the brass band arrangements made it an appropriately styled song to play around Christmas time.

I've included a  video of Jona Lewie performing his song in 2017 at the end of this post because it's festive and fun- and of course because its his song. However the version by The Cory Band with The Gwalia Singers really is equally  awesome.

Hey, Mr. Churchill comes over here
To say we're doing splendidly
But it's very cold out here in the snow
Marching to and from the enemy
Oh I say it's tough, I have had enough
Can you stop the cavalry?

I have had to fight almost every night
Down throughout these centuries
That is when I say, oh yes yet again
Can you stop the cavalry?

Mary Bradley waits at home
In the nuclear fallout zone
Wish I could be dancing now
In the arms of the girl I love

Dub-a-dub-a-dum-dum
Dub-a-dub-a-dum
Dub-a-dum-dum-dub-a-dum
Dub-a-dub-a-dum
Dub-a-dub-a-dum-dum
Dub-a-dub-a-dum
Dub-a-dum-dum-dub-a-dum
Dub-a-dub-a-dum
Wish I was at home for Christmas

Bang! That's another bomb on another town
While the Tsar and Jim have tea
If I get home, live to tell the tale
I'll run for all presidencies
If I get elected I'll stop
I will stop the cavalry

Dub-a-dub-a-dum-dum
Dub-a-dub-a-dum
Dub-a-dum-dum-dub-a-dum
Dub-a-dub-a-dum
Dub-a-dub-a-dum-dum
Dub-a-dub-a-dum
Dub-a-dum-dum-dub-a-dum
Dub-a-dub-a-dum
Wish I was at home for Christmas

Wish I could be dancing now
In the arms of the girl I love
Mary Bradley waits at home
She's been waiting two years long

Wish I was at home for Christmas

Songwriters: Lewis John Gordon, Nijs (de) Robert Rob