Quote:if you initiate an assault, all units that move into the assault hex in that activation must participate in Assault combat using the Assault Table. If they begin their activation in an assault hex, they may either fire with AT fire at armor in the hex or assault. They may not do both. Infantry AT weapons in an assault hex are a special case, spelled out in SSRs.
This is how I have always played it. I never felt the rules allowed a unit to move into a hex and then use it's AT fire ability on that activation. That doesn't seem to be assault and it seems to give the AT capable unit a special benefit.