A Langstrafer converted freighter 'yuca fries' a Bysankid Patrol Corvette with a direct hit from its Casava Howitzers. Footage taken from the LPLA invasion of the Tunguska system.
Does your setting have cavalry? What are they up to? In mine they bypass thermal imaging suites meant to pick up vehicles and launch desperate assaults against degenerate slavers that employ advanced technology and brain-melting hypergeometry.
To be fair Trench Crusade was never "based warhammer." I get that it's supposed to be grimdark but it's basically just an edgy sacrilegious Christianity fanfic that doesn't even care to use real esoteric traditions as a basis for any of the shit it makes up.