Civilians are a common element of the Command & Conquer franchise. They usually serve no other purpose other than to provide ambiance to the environment, although in some cases, they play a small role in some missions and in Red Alert 2: Yuri's Revenge, they can be mind controlled to act as a distraction. Most of the time, civilians will run away in terror when a battle occurs nearby, and may occasionally get killed, whether accidentally or deliberately.

The only way you can hear these quotes is by mind controlling a civilian, so the voice should be obedient.