 Seeing his success as a ruler, subsequent emperors sought to have portraits similar to Caracalla's to suggest that they were on the same level as him, both in terms of military tenacity and authoritarian control.This facilitated more and more geometric, less idealized figural representations of leaders to constantly emphasize the ruler's strength and image.This geometric style proved to be useful to the Roman Tetrarchs that divided rule of the empire among themselves after the reign of the emperors.