Ensure both deployment zones have roughly equal access to cover and high ground.
If you are looking to bring your own tabletop battles to life, here is a story of how different terrain types change the flow of a Warhammer 40,000 game. The Industrial Choke Point warhammer-40k-terrain-ideas
Pipes and industrial machinery are perfect for creating linear obstacles. They don't block line-of-sight entirely but provide vital defensive bonuses for infantry moving through "no man's land." The Ruined Cathedral Ensure both deployment zones have roughly equal access
To the east, the remains of an towered over the rubble. This was a "Ruined" terrain piece—the bread and butter of 40k. Valerius watched as his Eliminators took up positions on the second floor. Because the ruin had a footprint, they gained the Benefit of Cover even if they weren't directly behind a wall, and the upper floors gave them a commanding view of the objective. They don't block line-of-sight entirely but provide vital
Valerius stood atop a rusted . Below him, his Intercessors used the thick conduits as Light Cover , ducking behind the iron curves to avoid incoming splinter fire.
At the heart of the city stood the . Unlike the crumbling ruins, these were "Fortifications." Designed with narrow firing slits and heavy plating, they offered the Heavy Cover keyword, making the defenders nearly impossible to shift in melee combat.