Gālerius Maximiānus prīmum adversus Narseum proelium īnsecundum habuit inter Callinīcum Carrāsque congressus, cum incōnsultē magis quam ignāvē dīmicāsset; admodum enim parvā manū cum cōpiōssimō hoste commīsit. Pulsus igitur et ad Dioclētiānum profectus, cum eī in itinere occurrisset, tantā īnsolentiā ā Dioclētiānō fertur exceptus, ut per aliquot passuum mīlia purpurātus trādātur ad vehiculum cucurrisse.
notes
The defeat of Galerius Maximinianus by the Persians (297 CE)
Gālerius Māximiānus: see Galerius
adversus Narseum: Narseh was the son of Shapur I (Sapor)
īnsecundum: "unfavorable"
inter Callinīcum Carrāsque: "between Callinicum and Carrhae"
copiosissimō: "very numerous"
Pulsus: perfect passive participle of pellō referring to Galerius
ad Dioclētiānum: see Diocletian
cum eī in itinere occurrisset: cum is circumstantial, with eī the dative object of occurrisset (AG 370), referring to Diocletian
exceptus: supply est
tantā īnsolentiā: "with such arrogance that..." signaling the following result clause (AG 537)
purpurātus: wearing the trappings of emperor. For the use of purpura signifying rule (LS purpura II.B.2)