So, Apocalypse, 8000pts aside. The Imperials take a pair of baneblades and prepare to roll out in style.
Turn 1- The orks rush forward into the Imperial flank. The baneblades open fire and fail to stop the orkish advance. In the assault phase, a big mek with a vortex grenade sucks the tank into the warp in one throw. There was some consolation when another big mek with shokk attack gun teleported himself into CC with the second baneblade and was beaten up by a chaplain.
The battle rages. Then,
Turn 4- Three killa kans charge the rear of the second baneblade after flank marching in. The baneblade explodes (of course) and kills about 30 men and seven tanks. Game over.