Well, it is mixed modern and ancient greek. According to history, the said general Agallianus drown himself into the sea in order not to be captured, because he was a revolter.
«Îνοπλος εαυτόν επόντωσεν» (Medieval Greek) replaced by "ἔνοπλος ἑαυτόν á¼Ï€ÏŒÎ½Ï„ωσεν"
It's Modern Greek apart from the phrase within the quotations marks which is Medieval Greek and it should be "... ἔνοπλος ἑαυτόν á¼Ï€ÏŒÎ½Ï„ωσεν".