Create a detailed 3D model of a Roman infantryman in full armor, with a gladius sword and a rectangular shield. The soldier should be dressed in traditional Roman military attire, including a helmet with a crest, chainmail armor, a tunic, and sandals. The armor should have realistic detailing, with a bronze or steel look for the helmet and chest plate. The shield should be decorated with Roman symbols. Pose the character in a ready stance, ready for battle.