[BwanaNdege]

In Vietnam I used to drift off to sleep listening to the sound of long range artillery (155mm, 8” ???) whispering way overhead. When something started coming down, the old ears said to the sleeping brain, “Wake up everybody, INCOMING!”

You can definitely hear artillery shells passing overhead.

[Red Badger]

But they weren’t passing overhead at 3 times the speed of sound............

[muawiyah]

We had a guard point on the old East German/West German border. It was in line of sight with an artillery range run by the East Bloc. They fired short. If they'd gone to full loads we were the target.

You'd see the rounds go up, and then down. Too far away to hear but you knew what they were.