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Click on picture to see it in bigger size.
Vet 3 circle is the bigger and brighter one, the smallest circle is no-fire zone.
First 2 are russian mortars, 3rd is USF mortar and grW 34 is ostheer mortar, other unit names should be obvious.
All units were sitting in same spot, tested in Angoville
I´ll just leave it here, discuss.