Complex sentence: As at the Bastille, the cry of treachery went up and the attackers assumed to have been ambushed and henceforth the Swiss were the subject of violent hatred on the part of "sans-culottes".
Split into simpler sentences: As at the Bastille, the cry of treachery went up. The attackers assumed that they had been drawn into a deliberate ambush and henceforth the Swiss were the subject of violent hatred on the part of "sans-culottes".