I don't know if this is rightfully a WWII song or a song ABOUT WWII, but how about ...

FRAULEIN (1957)

"As my memory wanders away over yonder,
down by the old river Rhine,
where I loved her and left her
and now can't forget her,
She was my pretty fraulein."
(chorus)
"Fraulein, fraulein, go down by the water,
just as the stars start to shine.
By the same stars above you, I swear that I love you.
You are my pretty fraulein."