Moving into an assault hex

[Schoenwulf]

I'd go with 12.3 in this case, since it would seem strange for unactivated units not to join in when the fresh T-34's enter the hex. With an estimated hex size of 200 meters, it would be hard for the "sitting" units to miss their compatriots joining them in the fight. Load up and fire those 76's comrades! However, depending on the actual assault situation, if time was on the Soviet side, I'd hold off, try to recover the disrupted units this turn and move in the adjacent unit next turn if the odds looked better.