The I read the card, if you were supposed to draw additional Raiders cards (Phases 3 or 4), you would not.
I think that applies to any of the following Character turns of that Game Turn. For example, if I am playing with 3 Characters, A, B, and C, and this card was drawn during Character A's turn Character B and C would not draw Raider Cards during their Character turns that turn.
During Stage's 3 and 4, in Game Turn Phase III, a Character would draw more than 1 Raider Card. I was curious how "All is Quiet on the Roads" would affect that draw.