Proponents of this position argue that the devastation from firebombing was greater than anything that could be justified by military necessity alone, and this establishes a "prima facie" case. The Allies were aware of the effects of firebombing, as British cities had been subject to them during the Blitz. Proponents disagree that Dresden had a military garrison and claim that most of the industry was in the outskirts and not in the targeted city centre, and that the cultural significance of the city should have precluded the Allies from bombing it.