AI Artillery Spotting

[Green]

Different elevations might also make a difference.

Yes, the Germans are on a 'plateau' but it is possible that Soviet units outside the visibility of the Germans could be at sufficient elevation to still spot their dust. As Rick mentioned (although I cannot find it in the the manual), if the current visibility is 5 hexes then the range to see the dust cloud would be 10 hexes. Within this radius there are potential locations for Soviet spotters to have a line-of-sight to (but not be seen by) the Germans.

Regardless, in this particular case there is no change in elevation between the Isolated Soviet units and the German units, so it makes sense that they can easily see the dust cloud over the field.