Complex sentence: The campaign, however, had discredited Belle-Isle; he was ridiculed in Paris and Fleury is said to have turned against him, and to complete his misfortunes, he was taken prisoner by the English in going from Cassel to Berlin through Hanover.
Split into simpler sentences: The campaign, however, had discredited Belle-Isle; he was ridiculed in Paris and Fleury is said to have turned against him, and. To complete his misfortunes, he was taken prisoner by the English in going from Cassel to Berlin through Hanover.