Constantine seized sole power over Rome to establish authority and stability and then moved the capital from Rome to Constantinople. Diocletian and his co-emperor Maximian abdicated power on May 1, 305 CE. However, over the course of the next five years, Maximian made several attempts to regain his title, and then committed suicide in 310. In the meantime, power passed to Maximian’s son Maxentius and Constantine, the son of a third co-emperor, Constantius.
Unfortunately for Diocletian’s legacy and the stability created by the Tetrarchy, a power struggle between the two heirs erupted a year after the former Augustus’ abdication. When Constantius died on July 25, 306 CE, his father’s troops proclaimed Constantine as Augustus in Eboracum (York, England).
In Rome, the favourite was Maxentius, who seized the title of emperor on October 28, 306 CE. Galerius, ruler of the Eastern provinces and the senior emperor in the Empire, recognized Constantine’s claim and treated Maxentius as a usurper. Galerius, however, recognized Constantine as holding only the lesser imperial rank of Caesar. Despite a mutiny against Galerius’ co-emperor Severus in 307, and Galerius’ subsequent failure to take Rome, Constantine managed to avoid conflict for most of this period. However, by 312, Constantine and Maxentius were engaged in open hostilities, culminating in the Battle of the Milvian Bridge, in which Constantine emerged victorious.
Although he attributed this victory to the aid of the Christian god, he did not convert to Christianity until he was on his deathbed. The following year, however, he enacted the Edict of Milan, which legalized Christianity and allowed its followers to begin building churches. With the Christian community growing in number and in influence, legalizing Christianity was, for Constantine, a pragmatic move.
Following a rebellion from Licinius, his own co-emperor in 324 CE, Constantine eventually had his former colleague executed and consolidated power under a single ruler. As the sole emperor of an empire with new-found stability, Constantine was able to patronize large building projects in Rome. However, despite his attention to that city, he moved the capital of the empire east to the newly founded city of Constantinople (modern-day Istanbul).
The Move Away from a Naturalistic Style
The institution of imperial authority underwent dramatic changes during the period of Late Antiquity. The Arch of Constantine reflects the continuance of the newly-adopted artistic style for imperial sculpture. This arch was erected between the Colosseum and Palatine Hill, the home of the imperial palace. It stands over the triumphal route before it enters the Republican Forum. This forms a dialogue with the Arch of Titus at the top, overlooking the Forum, and the Arch of Septimius Severus, which, in turn, stands at the other end of the Forum before the Via Sacra heads uphill to the Capitolium.
The Senate commissioned the triumphal arch in honour of Constantine’s victory over Maxentius. It is a triple arch and its iconography represents Constantine’s supreme power and the stability and peace his reign brought to Rome. The Arch of Constantine is especially noted for its use of spolia: architectural and decorative elements removed from one monument for use on another. Those from the monuments of Trajan, Hadrian, and Marcus Aurelius—all considered good emperors of the Pax Romana—were reused as decoration.Trajanic panels that depict the emperor on horseback defeating barbarian soldiers adorn the interior of the central arch. The original face was reworked to take the likeness of Constantine. Eight roundels, or relief discs, adorn the space just above the two smaller side arches. These are Hadrianic and depict images of hunting and sacrifice.
The final set of spolia includes eight-panel reliefs on the arch’s attic, from the era of Marcus Aurelius, depicting the dual identities of the emperor, as both a military and a civic leader. The incorporation of these elements symbolize Constantine’s legitimacy and his status as one of the good emperors. The rest of the arch is decorated using Late Antique styles. The proximity of different artistic styles, under four different emperors, highlights the stylistic variations and artistic developments that occurred, both in the second century CE, as well as their differences to the Late Antique style.
Besides the decorative elements in the spandrels, a Constantinian frieze runs around the arch, between the tops of the small arches and the bottoms of the roundels. This frieze highlights the artistic style of the period and chronologically depicts Constantine’s rise to power. Unlike previous examples of Late Antique art, the bodies in this frieze are completely schematic and defined only by stiff, rigid clothes. In one scene, featuring Constantine distributing gifts, the emperor is centrally depicted and raised above his supporters on a throne.
Valentina Follo, Dr. Beth Harris and Dr. Steven Zucker analyze and discuss the Arch of Constantine.
Arch of Constantine, 312-315 C.E., approximately 20m high, 25m wide, and 7m deep, central opening approximately 12m high, Rome.
