Editing Caracalla (section)

=== Co-''augustus'' ===
Caracalla's father appointed Caracalla, aged 9, joint ''Augustus'' and full emperor from 28 January 198.<ref>{{Cite book|title=The Severans: the Changed Roman Empire|last=Grant|first=Michael|publisher=Psychology Press|year=1996|pages=19}}</ref>{{sfn|Cooley|2012|p=495}} This was the day Septimius Severus's [[Roman triumph|triumph]] was celebrated, in honour of his victory over the [[Parthian Empire]] in the [[Roman–Persian Wars]]; he had successfully sacked the Parthian capital, [[Ctesiphon]], after winning the [[Battle of Ctesiphon (198)|Battle of Ctesiphon]], probably in October 197.<ref name=":8">{{cite book|last=Kienast|first=Dietmar|title=Römische Kaisertabelle: Grundzüge einer römischen Kaiserchronologie|publisher=Wissenschaftliche Buchgesellschaft|year=2017|isbn=978-3-534-26724-8|place=Darmstadt|pages=149–155|chapter=Septimius Severus|ref={{sfnref|Kienast}}|orig-year=1990|language=de}}</ref> He was also awarded [[tribunician power]] and the title of ''[[imperator]]''.<ref name=":1" /> In inscriptions, Caracalla is given from 198 the title of the chief priesthood, ''[[pontifex maximus]]''.<ref name=":82" /><ref name=":1" /> His brother Geta was proclaimed ''nobilissimus caesar'' on the same day, and their father Septimius Severus was awarded the victory name ''Parthicus Maximus''.<ref name=":1" />

In 199, he was inducted into the [[Arval Brethren]].<ref name=":82" /> By the end of 199, at age 11, he was entitled ''[[pater patriae]]''.<ref name=":82" /> In 202, he was [[Roman consul]], having been named ''consul designatus'' the previous year.<ref name=":82" /> His colleague was his father, serving his own third consulship.''<ref name=":8" />

In 202, Caracalla was forced to marry the daughter of [[Gaius Fulvius Plautianus]], [[Fulvia Plautilla]], whom he hated, though for what reason is unknown.{{sfn|Dunstan|2011|p=402}} The wedding took place between the 9 and the 15 April, just after he turned 14.<ref name=":82" />

In 205, Caracalla was consul for the second time, in company with Geta – his brother's first consulship.<ref name=":82" /> By 205, aged 16, Caracalla had got Plautianus executed for treason, though he had probably fabricated the evidence of the plot.{{sfn|Dunstan|2011|p=402}} It was then that he banished his wife, whose later killing might have been carried out under Caracalla's orders.<ref name=":20" />{{sfn|Dunstan|2011|p=402}}

On 28 January 207, at age 18, Caracalla celebrated his ''[[decennalia]]'', the tenth anniversary of the beginning of his reign.<ref name=":82" /> The year 208 was the year of his third and Geta's second consulship.''<ref name=":82" />'' Geta was himself granted the rank of ''Augustus'' and tribunician powers in September or October 209.<ref name=":82" />{{sfn|Dunstan|2011|p=405}}<ref name=":1" />

During the reign of his father, Caracalla's mother Julia Domna had played a prominent public role, receiving titles of honour such as "Mother of the camp", but she also played a role behind the scenes helping her husband administer the empire.{{sfn|Goldsworthy|2009|page=[https://archive.org/details/howromefelldeath0000gold/page/76 76]}} Described as ambitious,{{sfn|Dunstan|2011|p=299}} Julia Domna surrounded herself with thinkers and writers from all over the empire.{{sfn|Dunstan|2011|p=404}} While Caracalla was mustering and training troops for his planned Persian invasion, Julia remained in Rome, administering the empire. Julia's growing influence in state affairs was the beginning of a trend of emperors' mothers having influence, which continued throughout the Severan dynasty.<ref>{{Cite book|last=Grant|first=Michael|title=The Severans: the Changed Roman Empire|publisher=Psychology Press|year=1996|pages=46}}</ref>