The line comes from Warhammer 40,000: Dawn of War, the 2004 real-time strategy game based on Games Workshop's Warhammer 40,000 setting. Imperial Guard Guardsmen were given reactive voice barks for combat, including spotting specific enemy types, which helped sell their vulnerability against superhuman opponents. Clips were later ripped and shared on soundboards, where the callout joined other tactical alerts like Enemy Spotted in gaming edits. It remains popular with Warhammer fans because it instantly signals danger while capturing the Guard's grim, expendable role in the lore.