Complex sentence: In the war between Octavianus and Mark Antony in 31 BC, lamblichus supported the cause of the latter; but after Gnaeus Domitius had gone over to Octavianus, Antony became suspicious of treachery, and accordingly put lamblichus to death by torture, along with several others.
Split into simpler sentences: In the war between Octavianus and Mark Antony in 31 BC, lamblichus supported the cause of the latter. But after Gnaeus Domitius had gone over to Octavianus, Antony became suspicious of treachery, and accordingly put lamblichus to death by torture, along with several others.