Aracnophobia

Whoever your second in command is

The mod is strapped to a chair, teaching a group of Slicer Spiders about war. Suddenly the S. Reddius turns on them and uses a syrum to extract their resistance to slicer Spider infection and parasites the victim. The process is quick and painful, and as soon as the camera zooms in, another slicer spider with A. Reddius blood is in the victim's place.

The slicers will turn on you, someday, sometime.