C114 They Were about to be Annihilated

After the toxic rain ceased, the zombies surged forward with increased speed, overwhelming the machine gun and assault rifle squads. They struggled to hold their ground.

But soon, the blare of a horn cut through the chaos: "All units, fight while retreating. Execute Plan B immediately. I repeat, implement Plan B now."

"What? We're initiating Plan B already?" a gunman exclaimed, caught off guard