When We Attacked, It Killed. When We Pushed Back, It Killed More | Military Sci-Fi Infantry Story for Sleep

A once-flourishing farming and refinery colony on a gas giant’s moon has become an expanding infested dead-zone. The enemy threatening the human colonists is not a creature soldiers can simply target and kill.The soldiers named it Stonegrinder — a massive alien siege organism that moves through cities like living geology. Anything it touches is broken down, separated, and digested into useful nourishment. What the organism cannot use remains behind as petrified grotesque statues of its former living form.The Stonegrinder does not just kill people. It turns buildings into breeding chambers, seals corridors like throats, digests bodies into raw material, and spreads smaller scouts through vents, shafts, and broken rooms. Once it takes even an inch of colony ground, that ground is lost and wasted forever. Retreat — even tactical retreat — stops being an option when the dead-zone threatens to swallow the colony.Deep inside the infected hab-stack is Node Seven, a breeding heart large enough to grow another Stonegrinder if it survives.A breacher cell is sent in with plasma cutters and thermobaric charges to destroy it before the main mass shifts north and swallows the next colony district.The soldiers are briefed as if they are fighting something half slime, half stone — but the Stonegrinder has many unseen ways to kill.This is "Retreat is Contamination" by Sascha Schmidt.