The AI directed at least 2, probable 3 artillery units on an infantry company and when the company routed out of the bombardment zone, the batteries followed it, dead on the entire time. The company was routing thru urban streets away from what I believe was the spotting unit and behind friendly units. And amazingly, the unit did not stop, but kept moving till it was well away from the bombardment zone.
There appears to be only one enemy unit that had an LOS the entire time. I have a save, although I think the artillery has lifted.
Maybe excellent fire direction like this happened, but I would think it would be extremely rare.
On the other hand, I have never seen artillery miss or seen a failed fire mission (lost rounds, lost comms, temporary loss of LOS, etc)
I have noticed stacked artillery units seems to be common. Not sure if that was historically the case or not.

