Maximinus Thrax in the context of "Rhine"

The denarius (Latin: [deːˈnaːriʊs]; pl.: dēnāriī, Latin: [deːˈnaːriiː]) was the standard Roman silver coin from its introduction in the Second Punic War c. 211 BC to the reign of Gordian III (AD 238–244), when it was gradually replaced by the antoninianus. It continued to be minted in very small quantities, likely for ceremonial purposes, until and through the Tetrarchy (293–313).

The word dēnārius is derived from the Latin dēnī "containing ten", as its value was originally of 10 assēs. The word for "money" descends from it in Italian (denaro), Slovene (denar), Portuguese (dinheiro), and Spanish (dinero). Its name also survives in the dinar currency.

Gordian I (Latin: Marcus Antonius Gordianus Sempronianus Romanus; c. 158 – April 238) was Roman emperor for 22 days with his son Gordian II in 238, the Year of the Six Emperors. Caught up in a rebellion against the Emperor Maximinus Thrax, he was defeated in battle and committed suicide after the death of his son, having had the second shortest reign in imperial history.

Gordian II (Latin: Marcus Antonius Gordianus Sempronianus Romanus; c. 192 – April 238) was briefly Roman emperor with his father Gordian I in 238, the Year of the Six Emperors. Seeking to overthrow Maximinus Thrax, he died in battle outside Carthage. Since he died before his father, Gordian II had the shortest recorded reign of any Roman emperor, at about 22 days.

A barracks emperor (also called a "soldier emperor") was a Roman emperor who seized power by virtue of his command of the army. Barracks emperors were especially common from 235 to 284 AD, during the Crisis of the Third Century, which began with the assassination of Severus Alexander. Beginning with Maximinus Thrax, there were approximately fourteen barracks emperors in 33 years, which produced an average reign of a little over two years apiece. The resulting instability in the imperial office and the nearly-constant state of civil war and insurrection threatened to destroy the Roman Empire from within and left it vulnerable to attack from external adversaries.