I guess someone decided the Americans needed their own version. From the sheet music at Indiana University:


ARE WE DOWNHEARTED? NO! NO! NO!
Words by Ray Sherwood, music by Will Donaldson.
New York: F. B. Haviland Pub. Co. Inc., ©1917.

1. "Cheer up, cheer up, cheer up, ev'ryone,"
Said a soldier boy one day.
"Cheer up, cheer up; let us have some fun,
Before it's time to go away.
Ev'rybody sing! Let your voices ring.
We'll march away with a song."

CHORUS: Are we downhearted? No! No! No!
We are ready to go, go, go.
Goodbye sweetheart, for a little while.
Goodbye, mother; let me see you smile.
Soon the bugle will blow, blow, blow.
Duty calls, we know,
And we'll hang the kaiser to a sour apple tree.
Are we downhearted? No! No! No!

2. Dearie, dearie, now's the time to dance.
Soon the band will start to play.
Dearie, dearie, over there in France,
I won't forget this happy day.
Though we go to fight, still our hearts are light.
Cheer up; it's time to be gay.