244 Succeeds Gordian III, who had been defeated by the Sasanian king Shapur I and was killed by his soldiers. After peace had been concluded, Philip briefly used the titles Parthicus Adiabenicus, Persicus maximus, and Parthicus maximus; he arrives in Rome; his son Marcus Julius Philippus Junior made caesar
245 Consul (with Gaius Maesius Titianus); leaves Rome for a war against the Carpi
Philip the Arab
246 War against the Carpi; later also a war against the Germanic tribes
247 Consul II (with Philippus Junior); triumph; he accepts the titles Carpicus Maximus and Germanicus Maximus
248 Consul III (with Philippus Junior II); celebration of Rome's millennium; death of Otacilia; revolt of Pacatianus in Moesia or Pannonia; Decius restores order along the Danube
248(?) Death of Otacilia
249 Revolt of Iotapatianus in the east; he is killed by his soldiers; in the north, Decius is proclaimed emperor; he defeats Philip near Verona
Coin commemorating Rome's 1000th birthday, showing the Temple of Venus and Roma