Hi
I beleive that it is policy that infantry guns have a minimum range when firing indirect?
The russian infanry guns unit 350 "37mm obr 15 IG" and unit 351 "76.2mm obr27 IG" dont seem to have a minimum indirect fire range.
maybe units 051, 385, pack hozitzers, have the same problem also?
This site seems to have some info on the guns.
http://www.jaegerplatoon.net/Infantry_guns.htm
Best Regards Chuck