Perhaps means "BFI" or Battlefield Integrity count. With 427 being a fairly large number and not presented in 4-2-7 or some such, it seems to me that would be logical. BPV could be entertained if there were a lot of vehicles available but it would certainly allow a boatload of infantry.The notation:
“427 is maximum BPI available for Turn 1 entry” is on the German scenario card. It’s obviously referring to the German reinforcements but what is “BPI?”
We’ll play it as BPV until further clarification.