On Alexandre Dumas' 20 Years After

I recently finished Alexandre Dumas' 20 Years After, the 1845 sequel to The Three Musketeers. It takes place during the Fronde in France and the English Civil War--that is, during a time when the world is violently polarized, like now.  In fact, the 4 musketeers end up on opposite sides of the same conflicts: D'artagnan and Porthos with the Cardinal, Aramis and Athos with the Frondists--only to ironically switch around in England, with D'artagnan and Porthos on the side of the Republican...