The battle scenes were filmed on a vast plain outside Madrid. Eight thousand trained soldiers from the Spanish infantry were used to double as the Roman army. Kubrick directed the armies from the top of specially constructed towers. However, he eventually had to cut all but one of the gory battle scenes, due to negative audience reactions at test screenings. So precise was Kubrick, that even in arranging the bodies of the slaughtered slaves he had each "corpse" assigned with a number and instructions.