Soviet 10 factor Artillery

[Blackcloud6]

I'm playing a scenario from Panzer Lion that requires Soviet 10 factor off-board artillery.  There is none in the 1944-45 RKKA OB, nor in the 1943-44 OOB.  But there is in the 1939-42 one.  You may want to update the later two OOBs to have them.