[I didn't bother with a commemoration because the sun never set on 11 September 2001, by my lights.]
The genius of the Flashman novels is that the protagonist has no volition, no agency in his own story; his adventures happen to him as he follows the path of least resistance. This invites the reader to identify with the hero and to feel as if the adventures are happening to him as well: if Flashman makes no decisions, then he makes no decisions that you yourself would not have made in his place.
In Flash for Freedom this gimmick takes a strange turn. Flashman is first employed unwittingly in the slave trade, then rooked into service as conductor on the Underground Railroad, then he finds work as a slave-driver, then he is pressed into slavery himself! What am I to make of this? A more conventional novel would surely present the turnabout as Rod Serling-esque comeuppance, but Flashman doesn’t get comeuppance. He’s an amoral creature in an amoral universe. Rather, the reader [this reader, at any rate] feels invited to participate in the story as a slaver and even to enjoy whipping slaves along with Flashman as he vents his frustrations and raises the cotton yield to boot.
Flashman isn’t just an anachronism. He’s political pornography in the modern age. I’ll hang on to my copies tightly because I’m not confident they’ll be legal to buy or even own in another ten years, First Amendment or no.