Bless them all

Last night I was watching TV when lyrics popped into my head. I don't know why it did, it had nothing to do with what I was watching.
"Bless them all, Bless them all, the long and the short and the tall.."
That's all I remember of this song and I didn't know where I knew it from. I thought it might be from an old war movie.
I had to research it when I got up.

BLESS 'EM ALL

Words and Music by Irving Berlin

Bless 'em all, bless 'em all
The long and the short and the tall
Bless all the sergeants and W.O. Ones
Bless all the corp'rals and their blinking sons
For we're saying good-bye to them all
As back to the barracks we crawl
You'll get no promotion this side of the ocean
So cheer up my lads Bless 'em all.

I guess there are worse songs to get stuck in your head.