Basilisk
The Basilisk is the redoubtable artillery piece of the Imperial Guard.
In other words it's a cardboard tank with a fuckhuge gun.
And if they had bayonets they would be fuckawesome.
Was it mentioned that they have the second longest range of any weapon in the game (10 feet direct fire, 20 feet indirect guess-fire)? The ability to lob a shell that can effectively instagib an entire squad a table or two away is simply astounding, not to mention utterly pointless in a table-top wargame.