If my English language skills don's desert me I understand that a "BUAf" is a BUA that may be placed if placing PF is an option.
Scanning through the army books I find list that have BUAf in the terrain but no PF in the list. There are alsways at least TF in the examples I scanned. But they are no PF. So the BUAf entry is useless...
Am I understanding this wrong?