They Looked Fine, So Command Let Them Through | Military Sci-Fi Infantry Story for Sleep

At Prym Refinery, a Graveclam has anchored itself over the primary fusion stack and turned the worker districts into calcified streets, toxic sludge, and yellow-gray vapor. Second Combat Engineers enter with a seismic lance team to unanchor GC-7 before the fusion stack turns the refinery basin into a poisoned crater. The Graveclam does not need to chase soldiers. It breathes symbiont vapor into the refinery, leaving infected personnel outwardly rational enough to pass checks, give orders, approve false evac routes, and clear compromised survivors through command procedure. This is "The Graveclam" by Sascha Schmidt