Unterlaufen military meaning

[Gewehr41]

Hi, I read "Feuer bereits unterlaufen ist". Unterlaufen is "suppressed" but about the artillery fire, what means?

[kfbr392]

unterlaufen can never be translated as suppressed IMHO.

"Feuer bereits unterlaufen" can be here translated as "having already ran/ advanced to a point in the terrain where the enemy flat trajectory fire passes harmlessly overhead".

[Steve E]

Artillery fire already bypassed, passed under it so as not to be affected by it anymore.
Regards Steve.