The Flashman Papers are one of my very guilty pleasures. The protagonist is a cowardly bully, he's bigoted, has no shame, and if he were a real person in 2021, he would be justly canceled faster than you can say the word. Fortunately he isn't real and his terrible qualities seem to be viewed with the proper attitude in Fraser's writing. The result is a character who is wildly entertaining to read mixed with historical events that are interesting to imagine. Fun!

Check them out of you haven't (with caveats).