The clip The Unit's First Night Duty Part 2 from All Quiet on the Western Front (1930)
Those big fellas just make a lot of noise and land about five miles behind the line.
The things we've got to watch out for are the light ones.
They don't give you much warning.
They go "waa-aa-aah zing. "
And when you hear that, down!
Press yourselves down upon her.
Bury yourselves deep into her.
Just keep your eyes on me.
When you see me flop, you flop,
only try to beat me to it.
Shh-shh. Now listen.
I'll show you how it's done.
Give me a couple of those. That's to kill the noise.