Unit having a zero Hard & Soft Attack Value?

[Arkan]

Because it's an engeneer vehicle (AVRE = Armored Vehicle Royal Engeneer)

The main gun was short range and only to destroy fortifications and he probably didn't had any machinegun. But if you look better you will see the AVRE unit have a great assault value :-) You can't shot with it but it's a great weapon to support an assault.