Constantine II then ascended to the throne alongside his two younger brothers, ruling Gaul, Hispania, and Britain.

However, his belief in his rights of primogeniture and attempts to exert them over his youngest brother Constans caused conflict, which ended with his death in a failed invasion of Italy in 340.

[18] Festival games were initiated in Rome to celebrate the caesar's role in the successful military campaigns, in a public advertisement of his capability to rule.

"[24] In what seemed to be an attempt to distance themselves from the massacre,[25][26] the three brothers proceeded to print coins of Theodora, whom their murdered relatives had been descended from.

[20] Most of the coins were generated at Constantine II's capital, Trier, indicating that he was the one responsible for designing and producing the coinage at the start, as well as convincing his brothers to do the same.

[29] He issued an order allowing the exiled bishop Athanasius to return to Alexandria, which was under the control of Constantius II,[30] claiming to be carrying out the unfulfilled intentions of his father.

[34] Constantine was evidently left unsatisfied with the results of their meeting,[36][37] seemingly believing that his age granted him some sort of seniority in the imperial college[38] and, by extension, control over the dominion of his youngest brother Constans, who was still a teenager in 337.