The training of Gladiatorial battles spread fast in Roman tradition. Its start is traced back to the munus, i.e., the training of rich and famous figures of sponsoring general public performances during religious vacations, festivals and activities. The Emperor Vespasianus built the greatest amphitheater on earth for gladiatorial games: the Flavian Amphiteatre, better known as the Coliseum. The battles took place frequently happened between couples of varied gladiator sorts for instance the myrmillons, the thracians, the secutores, the retiarii, each characterized by their own gear and fighting style.